How can I check if a string contains only English uppercase and lovercase letters and '|' characters?
37
Regular Expression for alphanumeric and underscores
37136
Is there a way to check whether unicode text is in a certain language?
52235
Case insensitive regular expression without re.compile?
111843
How do I grep for all non-ASCII characters?
126
How do I compare strings in Java?
25073
How to compare Unicode strings in Javascript?
10951
Case insensitive 'Contains(string)'
30248
How to detect lowercase letters in Python?
5512
How do I do a case-insensitive string comparison?
138961
In Bash, how can I check if a string begins with some value?
68020
How do I check if a given string is a legal/valid file name under Windows?
31087
How to check if a string contains a substring in Bash
64609
Creating a case-insensitive and accent/diacritics insensitive search on a field
9130
Convert all text from uppercase to lowercase and vice versa?
4033
Is there a case insensitive jQuery :contains selector?
27495
Why is True returned when checking if an empty string is in another?
137775
Convert a char to upper case using regular expressions (EditPad Pro)