
After go1.16, go will use module mode by default, even when the repository is checked out under GOPATH or in a one-off directory. Add go.mod, go.sum to keep this repo buildable without opting out of the module mode. > go mod init github.com/mmcgrana/gobyexample > go mod tidy > go mod vendor In module mode, the 'vendor' directory is special and its contents will be actively maintained by the go command. pygments aren't the dependency the go will know about, so it will delete the contents from vendor directory. Move it to `third_party` directory now. And, vendor the blackfriday package. Note: the tutorial contents are not affected by the change in go1.16 because all the examples in this tutorial ask users to run the go command with the explicit list of files to be compiled (e.g. `go run hello-world.go` or `go build command-line-arguments.go`). When the source list is provided, the go command does not have to compute the build list and whether it's running in GOPATH mode or module mode becomes irrelevant.
549 lines
8.5 KiB
Plaintext
549 lines
8.5 KiB
Plaintext
// This is a one line comment.
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/* an inner comment */
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/* nested /* comments */ */
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/*
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/*
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Multi-line.
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*/
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*/
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// Binary blob escape.
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//"some text \B(3)("\") ouhyeah" == "\"\\\"";
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"some text \B(3)("\") ouhyeah" == "\"\\\"";
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'some text \B(3)('\') ouhyeah' == '\'\\\'';
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//"\B(4)()"'()";
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"\B(4)()"'()";
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'\B(4)()'"()';
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//blob size limits
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"hey ! \B(0)() oh !"
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//blob format is wrong
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"hey ! \B(2)(aaa) oh !"
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"hey ! \B(100)(aaa) oh !"
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//multiple blob in a string
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"hey ! \B(3)(aaa) hey ! \B(3)(aaa) oh !"
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// multiple digits blob size
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"hey ! \B(10)(aaaaaaaaaa) !"
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"hey ! \B(10)(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) !"
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"hey ! \B(100)(a) !"
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// multiple digits blob size
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"hey ! \B(007)(aaaaaaa) !"
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"hey ! \B(007)(aa) !"
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"hey ! \B(007)(aaaaaaaaaaaaaaaaaa) !"
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// deprecated and restricted keyworks
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emit Event.new;
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static int main();
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loopn (2) {echo("a");};
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foreach (var i : [1,2,3,4]) {
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echo(i);
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};
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function() {};
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var 'if';
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var this.'else';
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var '%x';
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var '1 2 3';
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var this.'[]';
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// angles
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pi == 180deg;
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pi == 200grad;
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// Dictionary
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[ => ]; // The empty dictionary
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// duration
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1d == 24h;
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0.5d == 12h;
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1h == 60min;
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1min == 60s;
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1s == 1000ms;
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1s == 1;
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1s 2s 3s == 6;
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1s 1ms == 1.001;
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1ms 1s == 1.001;
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1 == 1;
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1 == 1.0;
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1.2 == 1.2000;
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1.234e6 == 1234000;
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1e+11 == 1E+11;
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1e10 == 10000000000;
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1e30 == 1e10 * 1e10 * 1e10;
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0.000001;
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0.0000001;
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0.00000000001;
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1e+3;
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1E-5;
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1.;
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// [00004701:error] !!! syntax error: unexpected ;
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0x2a == 42;
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0x2A == 42;
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0xabcdef == 11259375;
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0xABCDEF == 11259375;
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0xFFFFFFFF == 4294967295;
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//123foo;
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//[00005658:error] !!! syntax error: invalid token: '123foo'
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//12.3foo;
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//[00018827:error] !!! syntax error: invalid token: '12.3foo'
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0xabcdef;
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//[00060432] 11259375
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//0xabcdefg;
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//[00061848:error] !!! syntax error: invalid token: '0xabcdefg'
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[]; // The empty list
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[1, 2, 3];
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// Special characters.
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"\"" == "\"";
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"\\" == "\\";
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// ASCII characters.
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"\a" == "\007"; "\a" == "\x07";
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"\b" == "\010"; "\b" == "\x08";
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"\f" == "\014"; "\f" == "\x0c";
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"\n" == "\012"; "\n" == "\x0a";
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"\r" == "\015"; "\r" == "\x0d";
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"\t" == "\011"; "\t" == "\x09";
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"\v" == "\013"; "\v" == "\x0b";
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// Octal escapes.
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"\0" == "\00"; "\0" == "\000";
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"\0000" == "\0""0";
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"\062\063" == "23";
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// Hexadecimal escapes.
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"\x00" == "\0";
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"\x32\x33" == "23";
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"foo" "bar" "baz" == "foobarbaz";
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// Tuples
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();
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[00000000] ()
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(1,);
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[00000000] (1,)
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(1, 2);
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[00000000] (1, 2)
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(1, 2, 3, 4,);
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[00000000] (1, 2, 3, 4)
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function Global.verboseId(var x)
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{
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echo(x) | x
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}|;
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class verboseId(Global).math : verboseId(Math)
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{
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};
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{
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for (3)
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{
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sleep(1s);
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echo("ping");
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},
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sleep(0.5s);
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for (3)
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{
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sleep(1s);
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echo("pong");
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},
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};
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1 + 1 == 2;
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1 - 2 == -1;
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2 * 3 == 6;
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10 / 2 == 5;
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2 ** 10 == 1024;
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-(1 + 2) == -3;
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1 + 2 * 3 == 7;
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(1 + 2) * 3 == 9;
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-2 ** 2 == -4;
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- - - - 1 == 1;
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a = b
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a += b
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a -= b
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a *= b
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a /= b
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a %= b
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a ^= b
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var value = 0|;
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var valueAlias = value|;
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value += 10;
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valueAlias;
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var myList = []|;
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var myList.specialFeature = 42|;
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myList += [1, 2, 3];
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myList.specialFeature;
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var myOtherList = myList + [4, 5];
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myOtherList.specialFeature;
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var something = []|;
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var somethingElse = something|;
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something += [1, 2];
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somethingElse += [3, 4];
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something;
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class Counter
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{
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var count = 0;
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function init (n) { var this.count = n };
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// Display the value, and the identity.
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function asString() { "%s @ %s" % [count, uid ] };
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function '+'(var n) { new(count + n) };
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function '-'(var n) { new(count - n) };
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}|;
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class ImmutableCounter : Counter
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{
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function '+='(var n) { this + n };
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function '-='(var n) { this - n };
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}|;
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var ic1 = ImmutableCounter.new(0);
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var ic2 = ic1;
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ic1 += 1;
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ic1;
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ic2;
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a << b
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a >> b
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a ^ b
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4 << 2 == 16;
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4 >> 2 == 1;
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!a
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a && b
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a || b
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true && true;
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true || false;
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!true == false;
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true || (1 / 0);
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(false && (1 / 0)) == false;
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a == b
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a != b
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a === b
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a !== b
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a ~= b
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a =~= b
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a < b
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a <= b
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a > b
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a >= b
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assert{
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! (0 < 0);
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0 <= 0;
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0 == 0;
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0 !== 0;
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};
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a in b
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a not in b
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a[args]
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a[args] = v
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1 in [0, 1, 2];
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3 not in [0, 1, 2];
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"one" in ["zero" => 0, "one" => 1, "two" => 2];
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"three" not in ["zero" => 0, "one" => 1, "two" => 2];
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a.b
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a.b(args)
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a->b
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a->b = v
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a.&b
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var obj = Object.new|;
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function obj.f() { 24 }|;
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var f = function(a, b) {
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echo(b + a);
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}|
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f(1, 0);
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function g3()
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{
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return; // Stop execution at this point and return void
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echo(0); // This is not executed
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}|
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Object.setProperty, to define/set a property.
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Object.getProperty, to get a property.
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Object.removeProperty, to delete a property.
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Object.hasProperty, to test for the existence of a property.
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Object.properties, to get all the properties of a slot.
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enum Suit
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{
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hearts,
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diamonds,
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clubs,
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spades, // Last comma is optional
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};
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for (var suit in Suit)
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echo("%s the ace of %s." % [find_ace(suit), suit]);
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switch ( ("foo", [1, 2]) )
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{
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// The pattern does not match the values of the list.
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case ("foo", [2, 1]):
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echo("fail");
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// The pattern does not match the tuple.
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case ["foo", [1, 2]]:
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echo("fail");
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// The pattern matches and binds the variable "l"
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// but the condition is not verified.
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case ("foo", var l) if l.size == 0:
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echo("fail");
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// The pattern matches.
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case ("foo", [var a, var b]):
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echo("foo(%s, %s)" % [a, b]);
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};
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//[00000000] *** foo(1, 2)
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{
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["b" => var b, "a" => var a] = ["a" => 1, "b" => 2, "c" => 3];
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echo("a = %d, b = %d" % [a, b]);
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};
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//[00000000] *** a = 1, b = 2
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switch (["speed" => 2, "time" => 6s])
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{
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case ["speed" => var s] if s > 3:
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echo("Too fast");
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case ["speed" => var s, "time" => var t] if s * t > 10:
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echo("Too far");
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};
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//[00000000] *** Too far
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try
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{
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throw ("message", 0)
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}
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catch (var e if e.isA(Exception))
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{
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echo(e.message)
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}
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catch ((var msg, var value) if value.isA(Float))
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{
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echo("%s: %d" % [msg, value])
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};
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//[00000000] *** message: 0
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{
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var e = Event.new;
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at (e?(var msg, var value) if value % 2 == 0)
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echo("%s: %d" % [msg, value]);
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// Does not trigger the "at" because the guard is not verified.
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e!("message", 1);
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// Trigger the "at".
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e!("message", 2);
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};
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//[00000000] *** message: 2
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for (var i = 0; i < 8; i++)
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{
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if (i % 2 != 0)
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continue;
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echo(i);
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};
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do (1024)
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{
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assert(this == 1024);
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assert(sqrt == 32);
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setSlot("y", 23);
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}.y;
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{
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var n = 10|;
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var res = []|;
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loop;{
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n--;
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res << n;
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if (n == 0)
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break
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};
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res
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}
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{
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var n = 10|;
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var res = []|;
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loop|{
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n--;
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res << n;
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if (n == 0)
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break
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};
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res
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}
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var j = 3|
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while (0 < j)
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{
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echo(j);
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j--;
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};
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{
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var i = 4|
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while| (true)
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{
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i -= 1;
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echo ("in: " + i);
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if (i == 1)
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break
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else if (i == 2)
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continue;
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echo ("out: " + i);
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};
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};
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function test(e)
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{
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try
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{ throw e; }
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catch (0)
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{ echo("zero") }
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catch ([var x, var y])
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{ echo(x + y) }
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} | {};
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try { echo("try") }
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catch { echo("catch")}
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else { echo("else")};
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try
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{
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echo("inside");
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}
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finally
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{
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echo("finally");
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};
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//[00000001] *** inside
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//[00000002] *** finally
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at (e?(var start) ~ 1s)
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echo("in : %s" % (time - start).round)
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onleave
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echo("out: %s" % (time - start).round);
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// This emission is too short to trigger the at.
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e!(time);
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// This one is long enough.
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// The body triggers 1s after the emission started.
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e!(time) ~ 2s;
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//[00001000] *** in : 1
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//[00002000] *** out: 2
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timeout (2.1s)
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every (1s)
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echo("Are you still there?");
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//[00000000] *** Are you still there?
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//[00001000] *** Are you still there?
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//[00002000] *** Are you still there?
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every| (1s)
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{
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echo("aba");
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};
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for, (var i = 3; 0 < i; i -= 1)
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{
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echo (i);
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};
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for& (var i: [0, 1, 2])
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{
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echo (i * i);
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};
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loop,{
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};
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waituntil (e?(1, var b));
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whenever (e?("arg", var arg) if arg % 2)
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echo("e (%s) on" % arg)
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else
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echo("e off");
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while, (i)
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{
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var j = i -= 1;
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}|
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|
var y = 0;
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{
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sleep(0.5s);
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y = 100 smooth:3s,
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},
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