regex - Grep regular expression for digits in character string of ...
I need some way to find words that contain any combination of characters and digits but exactly 4 digits only, and at least one character. EXAMPLE: a1a1a1a1 // Match 1234 // NO ...
What's the difference between str.isdigit (), isnumeric () and ...
s.isdigit() s.isnumeric() s.isdecimal() I always get as output either all True or all False for each value of s (which is a string). What's the difference between the three? Can you provide an example that gives …
R regular expressions: unexpected behavior of " [:digit:]"
Nov 1, 2013 · I'd like to extract elements beginning with digits from a character vector but there's something about POSIX regular expression syntax that I don't understand. I would think that vec <- …
python - Does "\d" in regex mean a digit? - Stack Overflow
123 Only 1 and 3 are matched by the regex \d; 2 is not. Generally for a sequence of digit numbers without other characters in between, only the odd order digits are matches, and the even order digits …
How to take the nth digit of a number in python - Stack Overflow
Sep 23, 2016 · This solution solves many more "digit of a number" problems than the one using integer division and modulus. Try to find the leading (left-most) digit of the following numbers using both: …
Sum up a number until it becomes 1 digit JS - Stack Overflow
What is the most compact possible way to sum up a number in javascript until there is only one digit left. For example: You input 5678 then the script adds it together (5+6+7+8) and gets 26, but since its …
math - C: how to break apart a multi digit number into separate ...
Feb 3, 2018 · Say I have a multi-digit integer in C. I want to break it up into single-digit integers. 123 would turn into 1, 2, and 3. How can I do this, especially if I don't know how many digits the integer...
Getting each individual digit from a whole integer
Getting each individual digit from a whole integer Asked 15 years, 6 months ago Modified 1 year, 7 months ago Viewed 171k times
Difference between Char.IsDigit() and Char.IsNumber() in C#
Oct 23, 2008 · This contrasts with IsDigit, which determines if a Char is a radix-10 digit. Valid numbers are members of the following categories in UnicodeCategory: DecimalDigitNumber Decimal digit …
Regular expression to match standard 10 digit phone number
Regular expression to match standard 10 digit phone number Asked 12 years, 7 months ago Modified 1 year, 9 months ago Viewed 1.0m times