如何调用非内置的内置函数？

Question

table() has been a standard function in MATLAB since R2013b. As far as I can see from the documentation, there's nothing special about table, compared to sum, cell, struct, or any other builtin function.

但是，当我尝试使用 builtin('table',var1,...varN) 运行函数时，我收到一条错误消息：

Error using builtin

Cannot find builtin function 'table'

进一步调查表明它实际上不被视为内置函数：

which('cell')
built-in (C:\Program Files\MATLAB\R2014b\toolbox\matlab\datatypes\cell)

which('table')
C:\Program Files\MATLAB\R2014b\toolbox\matlab\datatypes\@table\table.m  % table constructor
|
Not builtin

进一步调查：

which cell2mat
C:\Program Files\MATLAB\R2014b\toolbox\matlab\datatypes\cell2mat.m

which mat2cell
C:\Program Files\MATLAB\R2014b\toolbox\matlab\datatypes\mat2cell.m

which table2array
C:\Program Files\MATLAB\R2014b\toolbox\matlab\datatypes\table2array.m

which struct2cell
built-in (C:\Program Files\MATLAB\R2014b\toolbox\matlab\datatypes\@struct\struct2cell)  % struct method

which cell2struct
built-in (C:\Program Files\MATLAB\R2014b\toolbox\matlab\datatypes\@cell\cell2struct)  % cell method

因此，cell 是内置的，而 table 不是。 cell2struct 是内置的，而 cell2mat 不是。

为什么会这样，是否有一种简单的方法可以调用 MATLAB 未考虑内置的重载标准函数？

_{如果你认为为什么部分是"too broad"，请无视并跳到问题的最后部分。}

Answer 1

builtin的文档页面给出了明确的定义：

A built-in function is part of the MATLAB executable. MATLAB does not implement these functions in the MATLAB language. Although most built-in functions have a .m file associated with them, this file only supplies documentation for the function.

Answer 2

您可以通过以下方式找到本机函数：

allTables = which  ( '-all', 'table' )
allTables(cell2mat(strfind ( allTables, matlabroot )))

它不是完整的，对于某些功能（例如求和），根文件夹中有很多...

如何调用非内置的内置函数？

How can I call builtin functions that aren't builtin?

matlab

built-in