Use clear functions only if you need to clear all scripts and functions. In addition to clearing scripts and functions, it also clears persistent variables and MEX functions. Using clear functions causes MATLAB to recompile previously cached code, and can decrease performance.

When possible, replace instances of clear functions in your code.

• To clear a function or script, consider clearing only the specific function or script. For example, clear myFun.

• To clear only all MEX functions, consider using clear mex.

For more information, see clear.