res = isvalid(h)
| Parameter | Description |
|---|---|
| h | a handle object or handle array |
| Parameter | Description |
|---|---|
| res | a logical scalar or logical array with the same size as h |
isvalid returns true for valid handles and false for handles invalidated by delete.
Clearing one variable does not invalidate other aliases to the same handle object.
For handle arrays, the result has the same size as the input array.
d = [tempdir(), 'nelson_help_isvalid/'];
mkdir(d);
filewrite([d, '/NelsonHelpIsValidCounter.m'], ["classdef NelsonHelpIsValidCounter < handle"; " properties"; " Count = 0"; " end"; "end"]);
addpath(d);
h(3) = NelsonHelpIsValidCounter();
isvalid(h)
delete(h(2));
isvalid(h)| Version | Description |
|---|---|
| 1.0.0 | initial version |
| 2.0.0 | handle array result documented |