MATLAB POLYSPACE 7 Guia de Instalação descarregar pdf (Página 477)

M-Lint Code Check Report

Message — Code (Original Line Numbers)

Explanation and Updated Code (New

Line Numbers)

49: Terminate statement with semicolon

to suppress output (in functions).

Adding a semicolon to the end of a statement

suppresses output and is a common practice.

M-Lint alerts you to lines that produce output

but lack the terminating semicolon. If you want

to view output from this line, do not add the

semicolon. You can instruct M-Lint to ignore

all messages on this line so that the me ssage s

on it will not appear by adding

%#ok to the end

of the line. However, because there is currently

another message on the line, do not add

%#ok

until you have addressed the other message.

Alternatively, you can add

%#ok with the

messageIDforthespecificmessageyou

want to suppress. To determine the message

ID, run

mlint('lengthofline.m', '-id'),

which indicates the ID is

NOPRT—for more

information , see the

mlint function reference

page.

For this example, assume y ou want to display

the output and suppress the M-Lint message.

To do so, add

%#ok<NOPRT> to the end of the

line.

Note that there is a similar message for

M-file scripts. This is so you can suppress the

message for M-files that are cell-mode scripts,

because they are often intended as demos and

the display of output is intentional.

49: Use of brackets [] is unnecessary.

Use parentheses to group, if needed.

—————————————————

49 len(nl) =

sum([sqrt(dot(temp',temp'))])

For more information about the use of brackets

and parentheses, see the Special Characters

reference page. In this example, remove

the brackets because they are not needed.

They add processing time because MATLAB

concatenates unnecessarily. Change line 52 to

len(nl) = sum(sqrt(dot(temp',temp')))

%#ok

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