在flex文件中有以下正则表达式。(.l文件)
doctype [[:blank:] \r\n]*<!DOCTYPE[^\[]*\[[[:blank:] \r\n]*
在一个flex教程中,在pattern chapiter中,我看到了那个flex defines ‘[:blank:]’ as a blank or a tab.
但是在上面的表达式中,为什么我们需要[:blank:]之后的另一个空白
从ExtJS文档中:
flex : Number
This configuration option is to be applied to child items of the container managed by this
layout. Each child item with a flex property will be flexed horizontally according to each
item's relative flex value compared to the sum of all items with a flex
value sp