Syntax

Description

tf = isKey(mapObj,keySet) looks for the specified keys in mapObj, and returns logical true (1) for the keys that it finds, and logical false (0) for those it does not. keySet is a scalar key or a cell array of keys.

Input Arguments

Output Arguments

Examples

Find Keys in a Map

Construct a map that contains rainfall data for several months:

months =   {'Jan', 'Feb', 'Mar', 'Apr'};
rainfall = [327.2, 368.2, 197.6, 178.4];
mapObj = containers.Map(months,rainfall);

Determine if keys Apr, May, and Jun are in the map:

keySet = {'Apr','May','Jun'};
tf = isKey(mapObj,keySet)

This code returns 1-by-3 vector tf:

tf =

     1     0     0

Find a Single Key

Determine if mapObj from the previous example contains key Feb:

keySet = 'Feb';
tf = isKey(mapObj,keySet)

This code returns scalar tf:

tf =

     1

See Also

containers.Map | keys | remove | values