Add Go 1.22's range-over-int example to for
This commit is contained in:
Eli Bendersky
@@ -15,10 +15,16 @@ func main() {
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}
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// A classic initial/condition/after `for` loop.
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for j := 7; j <= 9; j++ {
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for j := 0; j < 3; j++ {
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fmt.Println(j)
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}
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// Another way of accomplishing the basic "do this
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// N times" iteration is `range` over an integer.
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for i := range 3 {
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fmt.Println("range", i)
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}
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// `for` without a condition will loop repeatedly
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// until you `break` out of the loop or `return` from
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// the enclosing function.
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@@ -29,7 +35,7 @@ func main() {
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// You can also `continue` to the next iteration of
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// the loop.
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for n := 0; n <= 5; n++ {
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for n := range 6 {
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if n%2 == 0 {
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continue
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}
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@@ -1,2 +1,2 @@
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7af221b7da2f2b22b0b1b0a1b365afc5a56ef815
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2-4H-ArwHHS
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8eeb5be15c3c5fc3f9d0d8009dfcec771dc5e03d
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_F2rYHNilKa
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@@ -2,9 +2,12 @@ $ go run for.go
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1
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2
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3
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7
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8
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9
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0
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1
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2
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range 0
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range 1
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range 2
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loop
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1
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3
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31
public/for
generated
31
public/for
generated
@@ -42,7 +42,7 @@ some basic types of <code>for</code> loops.</p>
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</td>
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<td class="code leading">
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<a href="https://go.dev/play/p/2-4H-ArwHHS"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
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<a href="https://go.dev/play/p/_F2rYHNilKa"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
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<pre class="chroma"><code><span class="line"><span class="cl"><span class="kn">package</span> <span class="nx">main</span></span></span></code></pre>
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</td>
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</tr>
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@@ -89,12 +89,26 @@ some basic types of <code>for</code> loops.</p>
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</td>
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<td class="code leading">
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<pre class="chroma"><code><span class="line"><span class="cl"> <span class="k">for</span> <span class="nx">j</span> <span class="o">:=</span> <span class="mi">7</span><span class="p">;</span> <span class="nx">j</span> <span class="o"><=</span> <span class="mi">9</span><span class="p">;</span> <span class="nx">j</span><span class="o">++</span> <span class="p">{</span>
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<pre class="chroma"><code><span class="line"><span class="cl"> <span class="k">for</span> <span class="nx">j</span> <span class="o">:=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">j</span> <span class="p"><</span> <span class="mi">3</span><span class="p">;</span> <span class="nx">j</span><span class="o">++</span> <span class="p">{</span>
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</span></span><span class="line"><span class="cl"> <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="nx">j</span><span class="p">)</span>
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</span></span><span class="line"><span class="cl"> <span class="p">}</span></span></span></code></pre>
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</td>
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</tr>
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<tr>
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<td class="docs">
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<p>Another way of accomplishing the basic “do this
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N times” iteration is <code>range</code> over an integer.</p>
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</td>
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<td class="code leading">
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<pre class="chroma"><code><span class="line"><span class="cl"> <span class="k">for</span> <span class="nx">i</span> <span class="o">:=</span> <span class="k">range</span> <span class="mi">3</span> <span class="p">{</span>
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</span></span><span class="line"><span class="cl"> <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">"range"</span><span class="p">,</span> <span class="nx">i</span><span class="p">)</span>
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</span></span><span class="line"><span class="cl"> <span class="p">}</span></span></span></code></pre>
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</td>
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</tr>
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<tr>
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<td class="docs">
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<p><code>for</code> without a condition will loop repeatedly
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@@ -119,7 +133,7 @@ the loop.</p>
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</td>
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<td class="code">
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<pre class="chroma"><code><span class="line"><span class="cl"> <span class="k">for</span> <span class="nx">n</span> <span class="o">:=</span> <span class="mi">0</span><span class="p">;</span> <span class="nx">n</span> <span class="o"><=</span> <span class="mi">5</span><span class="p">;</span> <span class="nx">n</span><span class="o">++</span> <span class="p">{</span>
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<pre class="chroma"><code><span class="line"><span class="cl"> <span class="k">for</span> <span class="nx">n</span> <span class="o">:=</span> <span class="k">range</span> <span class="mi">6</span> <span class="p">{</span>
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</span></span><span class="line"><span class="cl"> <span class="k">if</span> <span class="nx">n</span><span class="o">%</span><span class="mi">2</span> <span class="o">==</span> <span class="mi">0</span> <span class="p">{</span>
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</span></span><span class="line"><span class="cl"> <span class="k">continue</span>
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</span></span><span class="line"><span class="cl"> <span class="p">}</span>
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@@ -143,9 +157,12 @@ the loop.</p>
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</span></span><span class="line"><span class="cl"><span class="go">1
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</span></span></span><span class="line"><span class="cl"><span class="go">2
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</span></span></span><span class="line"><span class="cl"><span class="go">3
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</span></span></span><span class="line"><span class="cl"><span class="go">7
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</span></span></span><span class="line"><span class="cl"><span class="go">8
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</span></span></span><span class="line"><span class="cl"><span class="go">9
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</span></span></span><span class="line"><span class="cl"><span class="go">0
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</span></span></span><span class="line"><span class="cl"><span class="go">1
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</span></span></span><span class="line"><span class="cl"><span class="go">2
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</span></span></span><span class="line"><span class="cl"><span class="go">range 0
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</span></span></span><span class="line"><span class="cl"><span class="go">range 1
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</span></span></span><span class="line"><span class="cl"><span class="go">range 2
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</span></span></span><span class="line"><span class="cl"><span class="go">loop
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</span></span></span><span class="line"><span class="cl"><span class="go">1
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</span></span></span><span class="line"><span class="cl"><span class="go">3
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@@ -181,7 +198,7 @@ structures.</p>
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</div>
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<script>
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var codeLines = [];
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codeLines.push('');codeLines.push('package main\u000A');codeLines.push('import \"fmt\"\u000A');codeLines.push('func main() {\u000A');codeLines.push(' i :\u003D 1\u000A for i \u003C\u003D 3 {\u000A fmt.Println(i)\u000A i \u003D i + 1\u000A }\u000A');codeLines.push(' for j :\u003D 7; j \u003C\u003D 9; j++ {\u000A fmt.Println(j)\u000A }\u000A');codeLines.push(' for {\u000A fmt.Println(\"loop\")\u000A break\u000A }\u000A');codeLines.push(' for n :\u003D 0; n \u003C\u003D 5; n++ {\u000A if n%2 \u003D\u003D 0 {\u000A continue\u000A }\u000A fmt.Println(n)\u000A }\u000A}\u000A');codeLines.push('');codeLines.push('');
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codeLines.push('');codeLines.push('package main\u000A');codeLines.push('import \"fmt\"\u000A');codeLines.push('func main() {\u000A');codeLines.push(' i :\u003D 1\u000A for i \u003C\u003D 3 {\u000A fmt.Println(i)\u000A i \u003D i + 1\u000A }\u000A');codeLines.push(' for j :\u003D 0; j \u003C 3; j++ {\u000A fmt.Println(j)\u000A }\u000A');codeLines.push(' for i :\u003D range 3 {\u000A fmt.Println(\"range\", i)\u000A }\u000A');codeLines.push(' for {\u000A fmt.Println(\"loop\")\u000A break\u000A }\u000A');codeLines.push(' for n :\u003D range 6 {\u000A if n%2 \u003D\u003D 0 {\u000A continue\u000A }\u000A fmt.Println(n)\u000A }\u000A}\u000A');codeLines.push('');codeLines.push('');
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</script>
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<script src="site.js" async></script>
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</body>
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