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Programming-Idioms

History of Idiom 51 > diff from v2 to v3

Edit summary for version 3 by :

Version 2

2015-05-06, 21:04:51

Version 3

2015-07-31, 19:36:56

Idiom #51 Check if map contains key

Determine whether map m contains an entry for key k

Idiom #51 Check if map contains key

Determine whether map m contains an entry for key k

Code
exists($m, $k)