MATLAB POLYSPACE 7 Przewodnik Instalacji Pobierz pdf (Strona 428)

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6 Editing and Debugging M-Files

Disabling and Enabling Breakpoints. You can disable selected

breakpoints so the prog ram temporarily ignores them and runs uninterrupted,

for example, after you think you identified and corrected a problem. This is

especially useful for conditional breakpoints — see “Conditional Breakpoints”

on page 6-126.

To disable a breakpoint, right-click the breakpoint icon and select Disable

Breakpoint from the contex t menu, or click anywhere in a line and select

Enable/Disable Breakpoint from th e Debug or context menu. You can also

disable a conditional breakpoint by clicking the breakpoint icon. This puts

X through the breakpoint icon as shown here.

After disabling a breakpoint, you can enable it to make it active again, or clear

it. To enable it, right-click the breakpoint ico n and select Enable Breakpoint

from the context menu, or click anywhere in a line and select Enable/Disable

Breakpoint from the Breakpoints or context menu. The

X no longer

appears on the breakpoint icon and program execution will pause at that line.

When you run

dbstatus, the resulting message for a disabled breakpoint is

Breakpoint on line 10 has conditional expression 'false'.

Clearing (Removing) Breakpoints. All breakpoints remain in a file until

you clear (remove) them or until they are automatically cleared. Clear a

breakpoint after d ete rmining that a lineofcodeisnotcausingaproblem.

To clear a breakpoint in the Editor/Debugger, click anywhere in a line

and select Set/Clear Breakpoint from the Debug or context menu. The

breakpoint for that line is cleared. Another way to clear a break point is to

click a standard bre akpoint icon, or a disabled conditio nal breakpoint icon.

To clear all breakpoints in all files, select Debug > Clear Breakpoints in

All Files, or click its equivalent button

on the toolbar.

The function that clears breakpoints is

dbclear. To clear all breakpoints, use

dbclear all. For the example, clear all of the breakpo in t s in collatzplot

by typing

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