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                ### 位運算符 Kotlin支持數字運算的標準集,運算被定義為相應的類成員(但編譯器會將函數調用優化為相應的指令) 對于按位運算,沒有特殊字符來表示,而只可用中綴方式調用函數,例如: ~~~ val x = (1 shl 2) and 0x000FF000 ~~~ 以下是完整位運算列表(只用于 Int 和 Long): * shl(bits) –——有符號左移 (Java 的 <<) * shr(bits) –——有符號右移 (Java 的 >>) * ushr(bits) ——無符號右移 (Java 的 >>>) * and(bits) ——位與 * or(bits) ——位或 * xor(bits) ——位異或 * inv() ——位非 ,按位取反 示例: ~~~ fun main(args: Array<String>) { /* 位運算符 支持序列如下:shl、shr、ushr、and、or、xor */ var operaNum: Int = 4 var shlOperaNum = operaNum shl (2) var shrOperaNum = operaNum shr (2) var ushrOperaNum = operaNum ushr (2) var andOperaNum = operaNum and (2) var orOperaNum = operaNum or (2) var xorOperaNum = operaNum xor (2) var invOperaNum = operaNum.inv() println("shlOperaNum => $shlOperaNum \n " + "shrOperaNum => $shrOperaNum \n " + "ushrOperaNum => $ushrOperaNum \n " + "andOperaNum => $andOperaNum \n " + "orOperaNum => $orOperaNum \n " + "xorOperaNum => $xorOperaNum \n " + "invOperaNum => $invOperaNum") } ~~~ 輸出 ~~~ shlOperaNum => 16 shrOperaNum => 1 ushrOperaNum => 1 andOperaNum => 0 orOperaNum => 6 xorOperaNum => 6 invOperaNum => -5 ~~~ >[info] PS:關于運算符,精講還需參考運算符具體章節
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