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                ??碼云GVP開源項目 12k star Uniapp+ElementUI 功能強大 支持多語言、二開方便! 廣告
                # Lua語言 - 安裝 <http://joedf.ahkscript.org/LuaBuilds/> 注釋--\[\[ 注釋--\]\] 或單行 --開始,操作符號不等于 ~= 邏輯運算 and or not ;連接運算..;計算字符長度`#"你好"`;分號可有可無 - 數據類型8種 nil 無效值,條件中表示false boolean布爾型 false true兩個值 number 雙精度浮點數 string字符串,單引號雙引號 userdata存儲在變量中C數據類型 function函數由C或Lua編寫 thread獨立線程,用于協程 table 表類型,可以用來支持數組用{}建立空表 - 變量,默認值nil ``` <pre class="calibre14">``` b<span class="token">=</span><span class="token3">1</span> 全局變量 local b<span class="token">=</span> <span class="token3">5</span> 局部變量 a<span class="token2">,</span>b<span class="token">=</span><span class="token3">1</span><span class="token2">,</span><span class="token3">2</span> 同時賦值a<span class="token2">,</span>b也可用來交換a<span class="token2">,</span>b值比如<span class="token2">:</span>a<span class="token2">,</span>b<span class="token">=</span>b<span class="token2">,</span>a tab<span class="token">=</span><span class="token2">{</span>a<span class="token">=</span><span class="token3">1</span><span class="token2">,</span>b<span class="token">=</span><span class="token4">"wo我"</span><span class="token2">}</span> tab<span class="token2">[</span><span class="token4">"a"</span><span class="token2">]</span> 或tab<span class="token2">.</span>a tab<span class="token">=</span><span class="token2">{</span><span class="token3">1</span><span class="token2">,</span><span class="token4">"wo我"</span><span class="token2">}</span> tab<span class="token2">[</span><span class="token3">1</span><span class="token2">]</span>是<span class="token3">1</span>索引從<span class="token3">1</span>開始 沒有索引只能tab<span class="token2">[</span><span class="token3">1</span><span class="token2">]</span>一種調用方法 ``` ``` - 無限循環,break跳出當前循環語句 ``` <pre class="calibre14">``` <span class="token5">while</span><span class="token2">(</span> <span class="token3">true</span> <span class="token2">)</span> <span class="token5">do</span> <span class="token1">print</span><span class="token2">(</span><span class="token4">"循環將永遠執行下去"</span><span class="token2">)</span> end <span class="token5">for</span> i<span class="token">=</span><span class="token3">1</span><span class="token2">,</span><span class="token3">10</span><span class="token2">,</span><span class="token3">1</span> <span class="token5">do</span> 輸出<span class="token3">1</span>到<span class="token3">10</span> <span class="token1">print</span><span class="token2">(</span>i<span class="token2">)</span> end <span class="token5">for</span> i<span class="token">=</span><span class="token3">10</span><span class="token2">,</span><span class="token3">1</span><span class="token2">,</span><span class="token">-</span><span class="token3">1</span> <span class="token5">do</span> 輸出<span class="token3">10</span><span class="token">-</span><span class="token3">1</span> <span class="token1">print</span><span class="token2">(</span>i<span class="token2">)</span> end a <span class="token">=</span> <span class="token2">{</span><span class="token4">"one"</span><span class="token2">,</span> <span class="token4">"two"</span><span class="token2">,</span> <span class="token4">"three"</span><span class="token2">}</span> <span class="token5">for</span> i<span class="token2">,</span> v <span class="token5">in</span> <span class="token1">ipairs</span><span class="token2">(</span>a<span class="token2">)</span> <span class="token5">do</span> <span class="token1">print</span><span class="token2">(</span>i<span class="token2">,</span> v<span class="token2">)</span> end a<span class="token">=</span><span class="token3">1</span> 先輸出<span class="token3">1</span><span class="token">-</span><span class="token3">15</span> repeat <span class="token1">print</span><span class="token2">(</span><span class="token4">"a的值為:"</span><span class="token2">,</span> a<span class="token2">.</span><span class="token2">.</span><span class="token4">"<br>"</span><span class="token2">)</span> a <span class="token">=</span> a <span class="token">+</span> <span class="token3">1</span> <span class="token1">until</span><span class="token2">(</span> a <span class="token">></span> <span class="token3">15</span> <span class="token2">)</span> ``` ``` - 條件語句 nil false才為假,0是真,沒有switch語句 ``` <pre class="calibre14">``` a<span class="token">=</span><span class="token3">1</span> <span class="token5">if</span><span class="token2">(</span>a<span class="token">></span><span class="token3">0</span><span class="token2">)</span> then <span class="token1">print</span><span class="token2">(</span><span class="token4">"大于1"</span><span class="token2">)</span> <span class="token1">elseif</span><span class="token2">(</span>a<span class="token">==</span><span class="token3">0</span><span class="token2">)</span> then <span class="token5">else</span> <span class="token1">print</span><span class="token2">(</span><span class="token4">"小于0"</span><span class="token2">)</span> end ``` ``` - 函數,支持多個返回值,參數可變,..是鏈接符號,#arg計算長度 ``` <pre class="calibre16">``` arg <span class="token">=</span> <span class="token1">select</span><span class="token2">(</span><span class="token4">"#"</span><span class="token2">,</span> <span class="token2">.</span><span class="token2">.</span><span class="token2">.</span><span class="token2">)</span><span class="token2">;</span> 可變參數數量 <span class="token5">function</span> <span class="token1">average</span><span class="token2">(</span><span class="token2">.</span><span class="token2">.</span><span class="token2">.</span><span class="token2">)</span> result <span class="token">=</span> <span class="token3">0</span> local arg<span class="token">=</span><span class="token2">{</span><span class="token2">.</span><span class="token2">.</span><span class="token2">.</span><span class="token2">}</span> <span class="token">--</span><span class="token">></span> arg 為一個表,局部變量 <span class="token5">for</span> i<span class="token2">,</span>v <span class="token5">in</span> <span class="token1">ipairs</span><span class="token2">(</span>arg<span class="token2">)</span> <span class="token5">do</span> result <span class="token">=</span> result <span class="token">+</span> v end <span class="token1">print</span><span class="token2">(</span><span class="token4">"總共傳入 "</span> <span class="token2">.</span><span class="token2">.</span> #arg <span class="token2">.</span><span class="token2">.</span> <span class="token4">" 個數"</span><span class="token2">)</span> <span class="token5">return</span> result<span class="token">/</span>#arg end ``` ```
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