Non-existent keys in Go maps
In Go maps, looking up a non-existent key doesn’t cause an error; instead, it returns the zero value (zero-values-and-default-values-in-go) of the element type.
References
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In Go maps, looking up a non-existent key doesn’t cause an error; instead, it returns the zero value (zero-values-and-default-values-in-go) of the element type.
Next -> sorting-a-slice-in-go