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Utilità di programmazione

Valutare espressioni o funzioni indirettamente, impostare timer, gestire eccezioni

MATLAB^® include funzionalità per valutare indirettamente le espressioni, impostare timer per l’esecuzione del programma e acquisire dati sugli errori.

Funzioni

espandi tutto

Valutazione delle espressioni

`eval`	Valutare un'espressione di MATLAB
`evalc`	Evaluate MATLAB expression and capture results
`evalin`	Evaluate MATLAB expression in specified workspace
`feval`	Evaluate function
`run`	Run MATLAB script
`builtin`	Execute built-in function from overloaded method

Pianificazione dell'esecuzione con timer

`timer`	Schedule execution of MATLAB commands
`delete`	Delete files or objects
`get`	Query graphics object properties
`isvalid`	Determine valid handles
`set`	Set graphics object properties
`start`	Start timer
`startat`	Schedule timer to fire at specified time
`stop`	Stop timer
`timerfind`	Find timer objects
`timerfindall`	Find all timer objects
`wait`	Block command prompt until timer stops running

Gestione delle eccezioni

`try, catch`	Eseguire le dichiarazioni e catturare gli errori risultanti
`MException`	Capture error information
`addCause`	Record additional causes of exception
`addCorrection`	Provide suggested fix for exception
`getReport`	Get error message for exception
`MException.last`	Return last uncaught exception
`rethrow`	Rethrow previously caught exception
`throw`	Throw exception
`throwAsCaller`	Throw exception as if occurs within calling function
`matlab.lang.correction.AppendArgumentsCorrection`	Correct error by appending missing input arguments
`matlab.lang.correction.ConvertToFunctionNotationCorrection`	Correct error by converting to function notation (Da R2019b)
`matlab.lang.correction.ReplaceIdentifierCorrection`	Correct error by replacing identifier in function call (Da R2019b)

Esecuzione di codice parallelo portatile

`parfevalOnAll`	Run function on all workers in background
`parallel.pool.Constant`	Copy or create data only once on workers in parallel pool (Da R2021b)
`canUseGPU`	Verify supported GPU is available for computation (Da R2019b)
`canUseParallelPool`	Verify that parallel functions can use a parallel pool (Da R2020b)

Argomenti

Schedule Command Execution Using Timer

To schedule the execution of MATLAB commands, create a timer object.
- Timer Callback Functions
- Handling Timer Queuing Conflicts
Exception Handling in a MATLAB Application

It is a good programming practice to include error checking in your programs to ensure reliable operation under all conditions. You can decide how your programs respond to different types of errors.
- Throw an Exception
- Respond to an Exception
Create Hyperlinks that Run Functions
Functions that support the matlab: keyword can display hyperlinks, which execute commands when you click the hyperlink text.
Alternatives to the eval Function
Although the eval function is very powerful and flexible, it is not always the best solution to a programming problem. In many instances, there are recommended alternative approaches to using eval.
Run Parallel Language in MATLAB
You can run parallel code in serial if you do not have Parallel Computing Toolbox™.