Yasoob Khalid • 6/19/2019

Golang: Check if a key exists in map

This article explains how to check if a key exists in a Go map, using the two-value assignment and the boolean 'ok' variable. It contrasts this efficient map lookup with slower slice iteration and recommends using a map with an empty struct value type to minimize memory usage while achieving fast, constant-time lookups.

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#golang #Map #Empty Struct