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Code-golf is a competition to solve a particular problem in the fewest bytes of source code.

62 votes

Tips for golfing in <all languages>

Use Test-Driven Development If the code must handle various inputs, then write comprehensive tests and make it easy to run them all very quickly. This allows you to try risky transforms one baby ste …
Adrian McCarthy's user avatar
5 votes

Shortest code to determine if a string is a palindrome

C++, 107 (miscounted), 100 (miscounted), 81 string s;for(int c:t)if(isalnum(c))s+=c|32;return s==string(s.rbegin(),s.rend()); Exploits ASCII bit patterns. Relies on an evil using namespace std;. U …
Adrian McCarthy's user avatar