MATLAB COMPILER RELEASE NOTES Guide de l'utilisateur télécharger pdf (Page 398)

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R2009a

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size and range Implemented for validateattributes

The validateattributes function now enables you to check the size and range of the input

value. The following commands validate the size and range of the values of x and y

respectively:

x = rand(4,2,6);

y = uint8(50:10:200);

validateattributes(x, {'numeric'}, {'size', [4,2,6]});

validateattributes(y, {'uint8'}, {'>=', 50, '<=', 200})

isempty Supported for Map Objects

MATLAB now supports the isempty function for containers.Map objects. This example

creates a 0-by-1 Map object and runs isempty on it:

mapObj = containers.Map;

size(mapObj)

ans =

0 1

isempty(mapObj)

ans =

Bug Fix for Misinterpreted Variables

The example below describes a bug in the MATLAB software that has been fixed in

version 7.8. The bug was caused by misinterpretation of an unassigned variable. For

certain names, MATLAB mistakenly interpreted the variable as a stem in dot indexing.

The following example illustrates the problem. The example is a bit artificial (which is

why the bug went undiscovered for so long).

Suppose you have a function that is intended to perform two levels of dot-indexing:

function y = dotindextwice_A(j)

y = j.lang.String;

Calling this function with no arguments results in an error in all versions of MATLAB,

as it should.

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