问题描述
我只想在logcat中看到几个字.换句话说，只是一个给定的标签.我试图启用 Regex 并键入 [Encoder | Decoder] 作为过滤器，但是它不起作用.
I want to see just a couple of words in logcat. In other words, just a given tags. I tried to enable Regex and type [Encoder|Decoder] as filter, but it doesn't work.
推荐答案
您应使用分组构造:
(Encoder|Decoder)
实际上，您可以使用
Encoder|Decoder
如果使用 [Encoder | Decoder] ，则会创建与任何单个字符 E ， n ， c ... | ， D ...或 r .
If you use [Encoder|Decoder], the character class is created that matches any single character E, n, c... |, D... or r.
请参见 字符类或字符集 :
另一个必读的内容肯定是 带有竖线或管道符号的替换 :
Another must-read is certainly Alternation with The Vertical Bar or Pipe Symbol:
使用 (...) 时，您告诉regex引擎进行分组字符/子模式的序列(对于捕获的字符/子模式，子匹配存储在内存缓冲区中，您可以通过反向引用和不捕获的(?:...)来访问它们code>您只能将子模式分组):
When using (...) you tell the regex engine to group sequences of characters/subpatterns (with capturing ones, the submatches are stored in the memory buffer and you can access them via backreferences, and with non-capturing (?:...) you only group the subpatterns):
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