subexpression 中文意思是什麼
subexpression
解釋
子表達式-
The first parenthetical subexpression captures the protocol part of the web address
第一個括號子表達式捕獲web地址的協議部分。 -
The second parenthetical subexpression captures the domain address part of the address
第二個括號子表達式捕獲地址的域地址部分。 -
The third parenthetical subexpression captures a port number if one is specified
第三個括號子表達式捕獲埠號（如果指定了的話） 。 -
Marks the beginning and end of a subexpression
標記子表達式的開始和結束。 -
Matches the preceding character or subexpression zero or one time
零次或一次匹配前面的字元或子表達式。 -
Matches the preceding character or subexpression zero or more times
零次或多次匹配前面的字元或子表達式。 -
Matches the preceding character or subexpression zero or one time, or indicates a non - greedy quantifier
零次或一次匹配前面的字元或子表達式，或指示「非貪心」限定符。 -
The process of evaluation is similar to calculating by hand : while the expression contains parentheses, the subexpression inside the deepest nested pair of parentheses is evaluated
求值過程類似於手工計算：如果表達式中包含括號，先求嵌套最深的括號對中的子表達式的值。 -
For global common subexpression optimization, the compiler searches entire functions for common subexpressions
對于全局公共子表達式優化，編譯器搜索全部函數中的公共子表達式。 -
For local common subexpression optimization, the compiler examines short sections of code for common subexpressions
對于局部公共子表達式優化，編譯器檢查公共子表達式的一小部分代碼。 -
A subexpression that performs a positive lookahead search, which matches the string at any point where a string matching
執行正向預測先行搜索的子表達式，該表達式匹配處于匹配 -
You can repeat this subexpression no more than one time
只能重復一次該子表達式。 -
Local and global common subexpression elimination
局部和全局公共子表達式消除 -
Represents the results from a single subexpression capture
表示單個子表達式捕獲中的結果。 -
Applies or disables the specified options within the subexpression
應用或禁用子表達式中指定的選項。 -
Matches the preceding character or subexpression one or more times
一次或多次匹配前面的字元或子表達式。 -
That subexpression matches one or more characters other than or :
子表達式匹配/或:之外的一個或多個字元。 -
That subexpression matches zero or more digits following a colon
該子表達式匹配冒號後面的零個或多個數字。 -
A subexpression that performs a negative lookahead search, which matches the search string at any point where a string not matching
的字元串的起始點的搜索字元串。它是一個非捕獲匹配，即不能捕獲供以後使用的匹配。 -
In this optimization, the value of a common subexpression is calculated once
在此優化中，計算一次公共子表達式的值。
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