Python Checking Characters
120682
How do I verify that a string only contains letters, numbers, underscores and dashes?
124479
Check if a String contains a special character
143939
How do you use: isalnum, isdigit, isupper to test each character of a string?
101945
How to iterate over Unicode characters in Python 3?
150196
C++ to check if user input is a number, not a character or a symbol
56714
String comparison in \ifthenelse
118699
Using alternation or character class for single character matching?
35365
What is the easiest/best/most correct way to iterate through the characters of a string in Java?
81811
Simple way to count character occurrences in a string
31433
How do I properly compare strings in C?
141759
internal comparison of string and int in python
128484
How to filter string for unwanted characters using regex?
137306
Comparing two strings in C?
55142
How to get character array from a string?
39887
How to get the ASCII value of a character
14051
Python try-else
78395
Checking whole string with a regex