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Mark McGranaghan 2015-09-05 10:19:48 -07:00
parent 7dde60ce97
commit 93e2f08a6b
2 changed files with 9 additions and 4 deletions
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4
examples/random-numbers/random-numbers.hash
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@ -1,2 +1,2 @@
6ce1f98d3c22ee8bf02c41b393361d6cd5fff23a 8e97de760147b061dd09939db294c892211b6b80
TZElZIwNU1 ZdFpbahgC1

9
public/random-numbers
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@ -41,7 +41,7 @@ generation.</p>
</td> </td>
<td class="code leading"> <td class="code leading">
<a href="http://play.golang.org/p/TZElZIwNU1"><img title="Run code" src="play.png" class="run" /></a> <a href="http://play.golang.org/p/ZdFpbahgC1"><img title="Run code" src="play.png" class="run" /></a>
<div class="highlight"><pre><span class="kn">package</span> <span class="nx">main</span> <div class="highlight"><pre><span class="kn">package</span> <span class="nx">main</span>
</pre></div> </pre></div>
@ -124,7 +124,7 @@ other ranges, for example <code>5.0 &lt;= f' &lt; 10.0</code>.</p>
<td class="docs"> <td class="docs">
<p>The default number generator is deterministic, so it&rsquo;ll <p>The default number generator is deterministic, so it&rsquo;ll
produce the same sequence of numbers each time by default. produce the same sequence of numbers each time by default.
To make it non-deterministic, give it a seed that changes. To produce varying sequences, give it a seed that changes.
Note that this is not safe to use for random numbers you Note that this is not safe to use for random numbers you
intend to be secret, use <code>crypto/rand</code> for those.</p> intend to be secret, use <code>crypto/rand</code> for those.</p>
@ -167,6 +167,10 @@ produces the same sequence of random numbers.</p>
<span class="nx">fmt</span><span class="p">.</span><span class="nx">Print</span><span class="p">(</span><span class="nx">r2</span><span class="p">.</span><span class="nx">Intn</span><span class="p">(</span><span class="mi">100</span><span class="p">),</span> <span class="s">&quot;,&quot;</span><span class="p">)</span> <span class="nx">fmt</span><span class="p">.</span><span class="nx">Print</span><span class="p">(</span><span class="nx">r2</span><span class="p">.</span><span class="nx">Intn</span><span class="p">(</span><span class="mi">100</span><span class="p">),</span> <span class="s">&quot;,&quot;</span><span class="p">)</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nx">Print</span><span class="p">(</span><span class="nx">r2</span><span class="p">.</span><span class="nx">Intn</span><span class="p">(</span><span class="mi">100</span><span class="p">))</span> <span class="nx">fmt</span><span class="p">.</span><span class="nx">Print</span><span class="p">(</span><span class="nx">r2</span><span class="p">.</span><span class="nx">Intn</span><span class="p">(</span><span class="mi">100</span><span class="p">))</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nx">Println</span><span class="p">()</span> <span class="nx">fmt</span><span class="p">.</span><span class="nx">Println</span><span class="p">()</span>
<span class="nx">s3</span> <span class="o">:=</span> <span class="nx">rand</span><span class="p">.</span><span class="nx">NewSource</span><span class="p">(</span><span class="mi">42</span><span class="p">)</span>
<span class="nx">r3</span> <span class="o">:=</span> <span class="nx">rand</span><span class="p">.</span><span class="nx">New</span><span class="p">(</span><span class="nx">s3</span><span class="p">)</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nx">Print</span><span class="p">(</span><span class="nx">r3</span><span class="p">.</span><span class="nx">Intn</span><span class="p">(</span><span class="mi">100</span><span class="p">),</span> <span class="s">&quot;,&quot;</span><span class="p">)</span>
<span class="nx">fmt</span><span class="p">.</span><span class="nx">Print</span><span class="p">(</span><span class="nx">r3</span><span class="p">.</span><span class="nx">Intn</span><span class="p">(</span><span class="mi">100</span><span class="p">))</span>
<span class="p">}</span> <span class="p">}</span>
</pre></div> </pre></div>
@ -187,6 +191,7 @@ produces the same sequence of random numbers.</p>
<span class="go">81,87</span> <span class="go">81,87</span>
<span class="go">0.6645600532184904</span> <span class="go">0.6645600532184904</span>
<span class="go">7.123187485356329,8.434115364335547</span> <span class="go">7.123187485356329,8.434115364335547</span>
<span class="go">0,28</span>
<span class="go">5,87</span> <span class="go">5,87</span>
<span class="go">5,87</span> <span class="go">5,87</span>
</pre></div> </pre></div>