has

Determines if a given key exists in a dict.

This function does not generate a change.

Function

dict.has(key)

Arguments

Return value

Returns true if the given key is found in the dict and otherwise false.

Example

This code shows an example use case of has():

d = dict([[42, "The answer to everything"]]);

/* Check if the dict has a key 42 */
d.has(42);

Return value in JSON format

true