Now let's say you have two other related functions B and C in m-files B.m and C.m, respectively, that you also want to be able to call D, E, and F. However, I wouldn't suggest making it a habit of resorting to such tricks, as there are likely much better options for organizing your functions and files.įor example, let's say you have a main function A in an m-file A.m, along with local functions D, E, and F. There are some ways around the normal function scoping behavior outlined above, such as passing function handles as output arguments as mentioned in the answers from SCFrench and Jonas (which, starting in R2013b, is facilitated by the localfunctions function). They can also have access to variables in functions in which they are nested, which makes them quite useful albeit slightly tricky to work with. These are called nested functions, and these can only be called from within the function they are nested. In addition, you can also declare functions within other functions. they can only be called from within the script). Starting in R2016b, you can add local functions to scripts as well, although the scoping behavior is still the same (i.e. Functions in other m-files can not call them. When the function and file name differ, the file name must be used to call the main function.Īll subsequent functions in the m-file, called local functions (or "subfunctions" in the older terminology), can only be called by the main function and other local functions in that m-file. It is not required that the main function have the same name as the m-file, but for clarity it should. the main function), is invoked when that m-file is called.
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