MATLAB APPLICATION DEPLOYMENT - WEB EXAMPLE GUIDE Betriebsanweisung PDF herunterladen (Seite 250)

B Error and Warning Messages

B-6

Error: File: filename Line: # Column: # The PERSISTENT declaration must precede any use of

the variable variablename.

In the text of the function, there is a reference to the

variable before the

persistent declaration.

Error: File: filename Line: # Column: # The single colon operator (:) can only be used within an

array index expression.

You can only use the : operator by itself as an array

index. For example:

A(:) = 5; is okay, but y = :; is not.

Error: File: filename Line: # Column: # The variable variablename was mentioned more than

once as an input.

The argument list has a repeated variable. For example:

function y = myfun(x, x) % Incorrect

Error: File: filename Line: # Column: # The variable variablename was mentioned more than

once as an output.

The return value vector has a repeated variable. For example:

function [x, x] = myfun(y) % Incorrect

Error: File: filename Line: # Column: # This statement is incomplete. Variable arguments cannot

be made global or persistent.

The variables varargin and varargout are not like

other variables. They cannot be declared either global or persistent. For

example:

global varargin % Incorrect

Error: File: filename Line: # Column: # Variable argument (varargin) must be last in input

argument list.

The function call must specify the required arguments first

followed by

varargin. For example:

function [out1, out2] = example1(a, b, varargin)% Correct

function [out1, out2] = example1(a, varargin, b)% Incorrect

Error: File: filename Line: # Column: # Variable argument (varargout) must be last in output

argument list.

The function call must specify the required arguments first

followed by

varargout. For example:

function [i, j, varargout]= ex2(x1, y1, x2, y2, val)% Correct

function [i, varargout, j]= ex2(x1, y1, x2, y2, val)% Incorrect

Error: File: filename Line: # Column: # variablename has been declared both as GLOBAL and

PERSISTENT.

Declare variables as either global or persistent.

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