标识符 圆括号表达式(Parenthesized Expression) 圆括号表达式由多个子表达式和逗号','组成。 每个子表达式前面可以有 identifier x: 这样的可选前缀。
基于20个网页-相关网页
W3Eval的表达式可以包含三种括号:标准圆括号、方括号和花括号。
Expressions in W3Eval can contain three kind of parentheses: standard parentheses, square brackets, and curly braces.
当然,有时候您不得不在参数周围加上圆括号,或者表达式没有按照您计划的方式求值,但该原则不仅如此。
Sure, there are times when you have to put parentheses around arguments or an expression doesn't evaluate the way you planned, but there's more to this principle than that.
组是正则表达式中的子模式,它们包含在圆括号中。
Groups are subpatterns in the regular expression that are surrounded by parenthesis.
You might recall from grade school sometimes you put things in parentheses so that your addition happens first, then your multiplication, otherwise multiplication would happen by default first.
你们可能会想起小学时,将一些加法表达式,放在圆括号里,这样加法可以先计算,然后是乘法,否则,乘法默认先发生。
应用推荐