subexpression

美 　英

• 網(wǎng)絡(luò)子表達式；子運算式；子表示式

例句

The input and output of every query or subexpression within a query each form an instance of the Query data model.

查詢中的每個查詢或子表達式的輸入和輸出都將形成Query數(shù)據(jù)模型的實例。

Captures the matched subexpression into a group name or number name. The string used for.

將匹配的子字符串捕獲到一個組名稱或編號名稱中。

Each subexpression is identified by number, and is referred to as a back reference.

每個子表達式都由一個編號來標識，并稱作反向引用。

where the box indicates that the value is the result of a previously evaluated subexpression.

其中方框表示該值是之前子表達式賦值的結(jié)果。

One such trick is the ? : operator at the beginning of a subexpression.

其中一個技巧是子表達式開始處的？：運算符。

Step 1: To avoid dealing with parentheses, W3Eval determines which subexpression lies within the deepest nested pair of parentheses.

步驟1：為避免括號的處理，W3Eval確定哪個子表達式處于嵌套最深的那對括號中。

Marks the beginning and end of a subexpression.

標記子表達式的開始和結(jié)束。

Constant folding, common subexpression elimination are effective techniques in optimizing intermediate code.

常量合并、刪除公共子表達式是中間代碼優(yōu)化時采用的有效技術(shù)。

You can refer to a subexpression from within a regular expression, and from within a replacement string.

可以從正則表達式和替換字符串中引用子表達式。

Continues match only if the subexpression does not match at the position on the left.

僅當子表達式不在此位置的左側(cè)匹配時才繼續(xù)匹配。

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(xié)議部分。

For global common subexpression optimization, the compiler searches entire functions for common subexpressions.

對于全局公共子表達式優(yōu)化，編譯器搜索全部函數(shù)中的公共子表達式。

In this optimization, the value of a common subexpression is calculated once.

在此優(yōu)化中，計算一次公共子表達式的值。

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。

Continues match only if the subexpression does not match at this position on the right.

僅當子表達式不在此位置的右側(cè)匹配時才繼續(xù)匹配。

To evaluate the larger expression, the subexpression that changes the operand must first be evaluated.

而為了計算更復(fù)雜的表達式，改變操作數(shù)值的子表達式必須首先計算。

A collection of ranges is returned, one for each matched subexpression, and their properties are read-only.

傳回范圍的集合（一個集合對一個符合的子運算式），而且它們的屬性都是唯讀的。

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(yōu)化，編譯器檢查公共子表達式的一小部分代碼。

Matches the preceding character or subexpression zero or more times.

零次或多次匹配前面的字符或子表達式。

You can also refer to a subexpression from within a replacement string.

還可以從替換字符串中引用子表達式。

That subexpression matches any word that precedes a colon and two forward slashes.

該子表達式匹配在冒號和兩個正斜杠前面的任何單詞。

full-expression is an expression that is not a subexpression of another expression.

不是其他表達式的子表達式的表達式是完整表達式。

The subexpression in this case is everything enclosed in parentheses.

在此情況下，子表達式是括在括號中的所有內(nèi)容。

The Capture class contains the results from a single subexpression capture.

Capture類包含來自單個子表達式捕獲的結(jié)果。

Continues match only if the subexpression matches at this position on the right.

僅當子表達式在此位置的右側(cè)匹配時才繼續(xù)匹配。

Represents the results from a single subexpression capture.

表示單個子表達式捕獲中的結(jié)果。

Continues match only if the subexpression matches at this position on the left.

僅當子表達式在此位置的左側(cè)匹配時才繼續(xù)匹配。

Matches the preceding character or subexpression one or more times.

一次或多次匹配前面的字符或子表達式。

More often it simply has the effect of removing a common subexpression.

通常它只是除去公共子表達式。

Otherwise, the third subexpression is evaluated, and that is the value.

否則，將是第三個子表達式的值。

Use ( and ) parentheses (just as you do in mathematics) to apply a modifier to a subexpression. Here's an example: Given text file test. txt

使用（和）圓括號（就像數(shù)學(xué)中的用法）將修飾符應(yīng)用到子表達式。

Common Subexpression Elimination and Algebraic Simplification

公共子表達式消除和代數(shù)簡化

Local and global common subexpression elimination

局部和全局公共子表達式消除

This means "match a subpattern, but don't include the match in the back-references. " So let's examine the subexpression

這表示“查找子模式的匹配字符串，但不包括反向引用中的匹配結(jié)果”。

The following regular expression uses a single subexpression to do that

下面的正則表達式使用單個子表達式來實現(xiàn)這一點