[英]How to use regular expressions to find the Latex expression in a string
private static final String TEXT = "this a test 1: $\\$$,test 2: $\\underline{\\rm defund}$, test 3:$$\\underline{\\rm defund}$$";
Others told me a python pattern: 其他人告诉我一个python模式:
re.compile(r'(?=([^\\]?))(?:(?P<bound2>\$\$)|\$)(.*?[^\\])(?:(?(bound2)\$\$|\$))', re.S)
Expected: 预期:
$\$$ or \$, $\underline{\rm defund}$ or \underline{\rm defund}
But I use it in android,Java doesn't support express pattern
.Who can write a Java Pattern
for me or give me some tips? 但是我在android中使用它,Java不支持
express pattern
。谁可以为我编写Java Pattern
或给我一些提示?
In java, there are just little modifications. 在Java中,几乎没有修改。
1. Escape the backslash surrounding $
1.转义$周围的反斜杠
2. Make use of double quotation mark
2.使用双引号
Your new code would now look like this 您的新代码现在看起来像这样
Pattern.compile("(?=([^\\]?))(?:(?P<bound2>\\$\\$)|\\$)(.*?[^\\])(?:(?(bound2)\\$\\$|\\$))");
Note: Make sure you import your pattern class 注意:确保导入模式类
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