寻找正则表达式以匹配特定模式

Question

I need to get rid of date formats in over 6000 lines of code. The format is always the same, but dates and times will vary including AM/PM.

This is the pattern

[10/6/17, 11:13:52 AM]

So far I used

.+?(?=[0-9])

which grabs numbers but now I am stuck. Can anyone help? Thanks!

Answer 1

Try this:

(?i:(\[\d{1,2}\/\d{1,2}\/\d{1,2},\s+\d{1,2}:\d{1,2}:\d{1,2}\s+[AP]M\]))

My regex is a full match with no capturing group and case insensitive. Try it . Then choose the answer you prefer.

Answer 2

It depends on how strict you need to be and the boundary conditions. Something like

\[\d{1,2}\/\d{1,2}\/\d{1,2}, \d{1,2}:\d{2}:\d{2} \w{2}\]

should do it.

Btw, regex101.com is an awesome tool for debuging regexs

Answer 3

This should match your dates :

\[\d{1,2}/\d{1,2}/\d{1,2}, \d{1,2}:\d{1,2}:\d{1,2} [AP]M\]

Note that depending on the language you might need to escape the / .

Try it here .