31 lines
823 B
Go
31 lines
823 B
Go
// ## Number Parsing
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package main
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// Package `strconv` provides the number parsing.
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import "strconv"
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import "fmt"
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func main() {
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// `64` tells how many bits of precision to parse.
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f, _ := strconv.ParseFloat("1.234", 64)
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fmt.Println(f)
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// `0` means infer the base from the string.
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// `64` requires that the result fit in 64 bits.
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i, _ := strconv.ParseInt("123", 0, 64)
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println(i)
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// `ParseInt` will recognize hex-formatted numbers.
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d, _ := strconv.ParseInt("0x1b3e", 0, 64)
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println(d)
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// `Atoi` is a convenienice function for `int` parsing.
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k, _ := strconv.Atoi("456")
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println(k)
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// Parse functions return an error on bad input.
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_, e := strconv.Atoi("wat")
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fmt.Println(e)
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}
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