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string-functions.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Go by Example မြန်မာဘာသာ: String Functions</title>
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</head>
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<div class="example" id="string-functions">
<h2><a href="./">Go by Example မြန်မာဘာသာ</a>: String Functions</h2>
<table>
<tr>
<td class="docs">
<p>Standard library ရဲ့ <code>strings</code> package က အသုံးဝင်တဲ့ string-related function တွေ
အများကြီး ပေးထားပါတယ်။ ဒီမှာ ဒီ package အကြောင်း ခန့်မှန်းသိနိုင်အောင်
ဥပမာအချို့ ပြထားပါတယ်။</p>
</td>
<td class="code empty leading">
</td>
</tr>
<tr>
<td class="docs">
</td>
<td class="code leading">
<a href="https://go.dev/play/p/RzlqBebJ639"><img title="Run code" src="play.png" class="run" /></a><img title="Copy code" src="clipboard.png" class="copy" />
<pre class="chroma"><span class="kn">package</span> <span class="nx">main</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
</td>
<td class="code leading">
<pre class="chroma"><span class="kn">import</span> <span class="p">(</span>
<span class="s">"fmt"</span>
<span class="nx">s</span> <span class="s">"strings"</span>
<span class="p">)</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
<p><code>fmt.Println</code> ကို နာမည်တိုတိုနဲ့ alias လုပ်ထားပါတယ်၊
ဘာလို့လဲဆိုတော့ အောက်မှာ အများကြီး သုံးမှာမို့ပါ။</p>
</td>
<td class="code leading">
<pre class="chroma">
<span class="kd">var</span> <span class="nx">p</span> <span class="p">=</span> <span class="nx">fmt</span><span class="p">.</span><span class="nx">Println</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
</td>
<td class="code leading">
<pre class="chroma"><span class="kd">func</span> <span class="nf">main</span><span class="p">()</span> <span class="p">{</span>
</pre>
</td>
</tr>
<tr>
<td class="docs">
<p>ဒီမှာ <code>strings</code> package ထဲက function တွေရဲ့ နမူနာတွေ ရှိပါတယ်။
ဒါတွေက package ထဲက function တွေဖြစ်တဲ့အတွက် string object ပေါ်က
method တွေ မဟုတ်ပါဘူး။ ဒါကြောင့် စစ်ဆေးချင်တဲ့ string ကို
ပထမဆုံး argument အနေနဲ့ ထည့်ပေးရပါတယ်။ နောက်ထပ် function တွေကို
<a href="https://pkg.go.dev/strings"><code>strings</code></a> package docs မှာ တွေ့နိုင်ပါတယ်။</p>
</td>
<td class="code">
<pre class="chroma">
<span class="nf">p</span><span class="p">(</span><span class="s">"Contains: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">Contains</span><span class="p">(</span><span class="s">"test"</span><span class="p">,</span> <span class="s">"es"</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"Count: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">Count</span><span class="p">(</span><span class="s">"test"</span><span class="p">,</span> <span class="s">"t"</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"HasPrefix: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">HasPrefix</span><span class="p">(</span><span class="s">"test"</span><span class="p">,</span> <span class="s">"te"</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"HasSuffix: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">HasSuffix</span><span class="p">(</span><span class="s">"test"</span><span class="p">,</span> <span class="s">"st"</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"Index: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">Index</span><span class="p">(</span><span class="s">"test"</span><span class="p">,</span> <span class="s">"e"</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"Join: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">Join</span><span class="p">([]</span><span class="kt">string</span><span class="p">{</span><span class="s">"a"</span><span class="p">,</span> <span class="s">"b"</span><span class="p">},</span> <span class="s">"-"</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"Repeat: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">Repeat</span><span class="p">(</span><span class="s">"a"</span><span class="p">,</span> <span class="mi">5</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"Replace: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">Replace</span><span class="p">(</span><span class="s">"foo"</span><span class="p">,</span> <span class="s">"o"</span><span class="p">,</span> <span class="s">"0"</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"Replace: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">Replace</span><span class="p">(</span><span class="s">"foo"</span><span class="p">,</span> <span class="s">"o"</span><span class="p">,</span> <span class="s">"0"</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"Split: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">Split</span><span class="p">(</span><span class="s">"a-b-c-d-e"</span><span class="p">,</span> <span class="s">"-"</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"ToLower: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">ToLower</span><span class="p">(</span><span class="s">"TEST"</span><span class="p">))</span>
<span class="nf">p</span><span class="p">(</span><span class="s">"ToUpper: "</span><span class="p">,</span> <span class="nx">s</span><span class="p">.</span><span class="nf">ToUpper</span><span class="p">(</span><span class="s">"test"</span><span class="p">))</span>
<span class="p">}</span>
</pre>
</td>
</tr>
</table>
<table>
<tr>
<td class="docs">
</td>
<td class="code">
<pre class="chroma"><span class="gp">$</span> go run string-functions.go
<span class="go">Contains: true
</span><span class="go">Count: 2
</span><span class="go">HasPrefix: true
</span><span class="go">HasSuffix: true
</span><span class="go">Index: 1
</span><span class="go">Join: a-b
</span><span class="go">Repeat: aaaaa
</span><span class="go">Replace: f00
</span><span class="go">Replace: f0o
</span><span class="go">Split: [a b c d e]
</span><span class="go">ToLower: test
</span><span class="go">ToUpper: TEST</span></pre>
</td>
</tr>
</table>
<p class="next">
နောက်ဥပမာ: <a href="string-formatting">String Formatting</a>.
</p>
<p class="footer">
by <a href="https://markmcgranaghan.com">Mark McGranaghan</a> နှင့် <a href="https://eli.thegreenplace.net">Eli Bendersky</a> | <a href="https://github.com/mmcgrana/gobyexample">source</a> | <a href="https://github.com/mmcgrana/gobyexample#license">license</a>
</p>
</div>
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