从命令行调用本地函数 [英] Calling local functions from command line

问题描述

我在m-文件.例如:

% begining of public_function.m file
function fh = public_function( )
%
% do some computation...

fh = @local_function; % return function handle to local function defined below

function y = local_function( x )
% 
% a local function inside public_function.m file
% 

% some manipulation on x
y = x;

% end of public_function.m file NOTE THAT local_function is NOT nested

现在，我想从命令行(而不是从public_function)调用local_function.我能够使用从public_function返回的函数句柄做到这一点:

Now, I would like to call local_function from command line (and not from public_function). I was able to do so using the function handle returned from public_function:

>> fh = public_function(); % got handle to local_function
>> y = fh( x ); % calling the local function from command line :-)

我的问题:
除了从显式传递函数句柄之外，还有其他方法可以从命令行(或其他m文件/函数)调用本地函数吗?

My question:
Is there any other way (apart from explicitly pass the function handle) to call local function from command line (or other m-file/functions)?

更确切地说，我想要一种方法来访问文件中的任何本地函数(只要我知道它的名称).因此，如果我有public_function.m文件(和功能)，并且知道该文件本地的local_function，是否可以从命令行访问local_function?

More precisely, I want a method to access any local function in a file (provided that I know its name). So, if I have public_function.m file (and function) and I know that local_function is local to that file, is there a way to access local_function from command line ?

推荐答案

官方文件说:

...您不能从命令行或其他文件中的函数调用本地函数.

... you cannot call a local function from the command line or from functions in other files.

因此，您必须将其句柄传递给调用方，以便允许在其m文件之外间接调用它.我相信，否则，没有任何记录的明智方法可以访问本地功能.

According to this, you must pass its handle to the caller in order to allow invoking it indirectly outside its m-file. I believe that there is no documented sensible way to access local functions otherwise.

奇怪的是，您仍然可以使用help来完成此操作:

Oddly though, you can still do this with help:

help public_function>local_function

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