[英]What is the meaning of %s+% in regex?
I'm trying to understand the meaning of %s+%
in this solution我正在尝试理解此解决方案中
%s+%
的含义
Replace a set of pattern matches with corresponding replacement strings in R 用 R 中对应的替换字符串替换一组模式匹配
The important part of the code is this代码的重要部分是
xxx_replace_xxx_pcre(string, "\\b" %s+% patterns %s+% "\\b", replacements)
I know that \s+
is used to match one or more spaces, but what is the meaning inside %%
?我知道
\s+
用于匹配一个或多个空格,但是%%
里面的含义是什么?
I tried to use the code without it, because I just want to match inside word boundaries, but it gives an error我试图在没有它的情况下使用代码,因为我只想匹配单词边界内,但它给出了一个错误
xxx_replace_xxx_pcre(string, "\\b" patterns "\\b", replacements)
I already researched about special PCRE symbols and other things, but didn't find anything.我已经研究了特殊的 PCRE 符号和其他东西,但没有找到任何东西。 Can anyone give me some explanation about it?
谁能给我一些解释?
The function does a concatenation with a call to C function. function 与对 C function 的调用进行连接。 We can check the source code from console by backquoting the operator
我们可以通过反引号操作符从控制台检查源代码
library(stringi)
`%s+%`
function (e1, e2)
{
.Call(C_stri_join2, e1, e2)
}
Based on the behavior of the output, it seems that the C function is an optimized version of paste0
根据 output 的行为,似乎 C function 是
paste0
的优化版本
paste0("\\b", patterns, "\\b")
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