palindrome.md

Shortest code to determine if a string is a palindrome

Challenge link

Vyxal, 10 bytes

ɽẊ':₌ʀ±∨;Ḃ⁼

How it works

ɽ        # Since casing doesn't matter, map the string to lower case
':₌ʀ±∨;  # Filter for alpha-numerical characters -> filter (isAlpha || isNum)
Ḃ        # Bifurcate     a -> a, rev(a)
⁼        # Check if they are equal (i.e. the string is a palindrome)