榪欎簺鏈€涓哄鎬殑紼嬪簭璇█鐨勭壒鎬э紝鏉ヨ嚜stackoverflow.com錛屽師璐村湪榪欓噷銆傛垜鎽橀€変簡涓€浜涗緥瀛愶紝鐨勭‘鏄瘮杈冩€紓錛岃鎴戜滑涓€涓竴涓潵鐪嬬湅銆?/p>
1銆丆璇█涓殑鏁扮粍
鍦–/C++涓紝a[10] 鍙互鍐欐垚 10[a]
“Hello World”[i] 涔熷彲浠ュ啓鎴?nbsp;i["Hello World"]
2銆佸湪Javascript涓?nbsp;
’5′ + 3 鐨勭粨鏋滄槸錛?#8217;53′
’5′ – 3 鐨勭粨鏋滄槸錛? 鏇村javascript鐐瑰嚮榪欓噷
3銆丆/C++涓殑Trigraphs
Cpp浠g爜

- int main() {
- cout << "LOL??!";
- }
涓婇潰鐨勮繖孌電▼搴忎細杈撳嚭錛?nbsp;“LOL|”錛岃繖鏄洜涓???! 琚漿鎴愪簡 | 錛屽叧浜嶵rigraphs錛屼笅闈㈡湁涓〃鏍鹼細
??= |
# |
??( |
[ |
??/ |
\ |
??) |
] |
??’ |
^ |
??< |
{ |
??! |
| |
??> |
} |
??- |
~ |
4銆丣avaScript 鐨勬潯浠惰〃
鐪嬪埌涓嬮潰榪欎釜琛紝涓嶉毦鐞嗚В涓轟粈涔圝avascript紼嬪簭鍛樹負浠€涔堢棝鑻︿簡
Js浠g爜

- '' == '0' //false
- 0 == '' //true
- 0 == '0' //true
- false == 'false' //false
- false == '0' //true
- false == undefined //false
- false == null //false
- null == undefined //true
- " \t\r\n" == 0 //true
5銆丣ava鐨処nteger cache
Java浠g爜

- Integer foo = 1000;
- Integer bar = 1000;
-
- foo <= bar; // true
- foo >= bar; // true
- foo == bar; // false
-
- //鐒跺悗錛屽鏋滀綘鐨?nbsp;foo 鍜?nbsp;bar 鐨勫€煎湪 127 鍜?nbsp;-128 涔嬮棿錛堝寘鎷級
- //閭d箞錛屽叾琛屼負鍒欐敼鍙樹簡錛?nbsp;
-
- Integer foo = 42;
- Integer bar = 42;
-
- foo <= bar; // true
- foo >= bar; // true
- foo == bar; // true
涓轟粈涔堜細榪欐牱鍛紵浣犻渶瑕佷簡瑙d竴涓婮ava Interger Cache錛屼笅闈㈡槸鐩稿叧鐨勭▼搴忥紝娉ㄦ剰鍏朵腑鐨勬敞閲?/p>
Java浠g爜

- /**
-
- * Returns a <tt>Integer</tt> instance representing the specified
-
- * <tt>int</tt> value.
-
- * If a new <tt>Integer</tt> instance is not required, this method
-
- * should generally be used in preference to the constructor
- * <a href="mailto:{@link">{@link</a> #Integer(int)}, as this method is likely to yield
- * significantly better space and time performance by caching
- * frequently requested values.
- *
- * @param i an <code>int</code> value.
- * @return a <tt>Integer</tt> instance representing <tt>i</tt>.
- * @since 1.5
- */
- public static Integer valueOf(int i) {
- if(i >= -128 && i <= IntegerCache.high)
- return IntegerCache.cache[i + 128];
- else
- return new Integer(i);
- }
5銆丳erl鐨勯偅浜涘鎬殑鍙橀噺
Php浠g爜

- $.
- $_
- $_#
- $$
- $[
- @_
鍏舵墍鏈夌殑榪欎簺鎬紓鐨勫彉閲忚鍙傜湅錛?a style="color: #2970a6; text-decoration: none" >http://www.kichwa.com/quik_ref/spec_variables.html
6銆丣ava鐨勫紓甯歌繑鍥?/h2>
璇風湅涓嬮潰榪欐紼嬪簭錛屼綘瑙夊緱鍏惰繑鍥瀟rue榪樻槸false錛?/p>
Java浠g爜

- try {
- return true;
- } finally {
- return false;
- }
鍦?nbsp;javascript 鍜宲ython涓嬶紝鍏惰涓哄拰Java鐨勬槸涓€鏍風殑銆?nbsp;
7銆丆璇█涓殑Duff device
涓嬮潰鐨勮繖孌電▼搴忎綘鑳界湅寰楁噦鍚楋紵榪欏氨鏄墍璋撶殑Duff Device錛岀浉褰撶殑鎬紓銆?/p>
C浠g爜

- void duff_memcpy( char* to, char* from, size_t count ) {
- size_t n = (count+7)/8;
- switch( count%8 ) {
- case 0: do{ *to++ = *from++;
- case 7: *to++ = *from++;
- case 6: *to++ = *from++;
- case 5: *to++ = *from++;
- case 4: *to++ = *from++;
- case 3: *to++ = *from++;
- case 2: *to++ = *from++;
- case 1: *to++ = *from++;
- }while(--n>0);
- }
- }
8銆丳HP涓殑瀛楃涓插綋鍑芥暟鐢?/h2>
PHP涓殑鏌愪簺鐢ㄦ硶涔熸槸寰堟€紓鐨?/p>
Php浠g爜

- $x = "foo";
- function foo(){ echo "wtf"; }
- $x();
9銆佸湪C++涓紝浣犲彲浠ヤ嬌鐢ㄧ┖鎸囬拡璋冪敤闈欐€佸嚱鏁?/h2>
Cpp浠g爜

- class Foo {
- public:
- static void bar() {
- std::cout << "bar()" << std::endl;
- }
- };
鍛靛懙銆傜殑紜槸鎸烘€紓鐨勩€?