How can I create an empty Map container with a 'KeyType' other than the default 'char' in MATLAB 7.7 (R2008b)?

Date Last Modified: Wednesday, May 19, 2010

Solution ID:		1-71KD5H
Product:		MATLAB
Reported in Release:		R2008b
Fixed in Release:		R2010a
Platform:		All Platforms
Operating System:		All OS

Subject:

Problem Description:

I would like to be able to create an empty Map container with a 'KeyType' other than the default 'char' type.

Solution:

This enhancement has been incorporated in Release 2010a (R2010a). For previous product releases, read below for any possible workarounds:

The ability to create empty Map containers with 'KeyType' other than the default is not available in MATLAB.

To work around this, one can create a non-empty container with a desired 'KeyType' and then remove the values, as follows:
m = containers.Map(uint32(1), 1) % KeyType is uint32. remove(m,1)

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