.m is an executable code file format and is the Wolfram Language package source format. Used to store and exchange Wolfram Language programs, program packages and data in pure ASCII text format. Wolfram Language expressions are stored in the form of InputForm, which can represent program code, numerical and text data, two-dimensional raster and vector images, three-dimensional geometry, and sound. and other data types.
Usage
In Mathematica, a package is a mathematical text file that contains other than Mathematica applications Definition of commands other than those within the program itself. In fact, Mathematica comes with some Packages; some of them are loaded when Mathematica starts, while others are not loaded at startup. You need to see some packages loaded if they are required by commands defined but are not loaded yet. There are basically two approaches:
Method 1
Open the required package and manually evaluate its commands. (Typically, a package-provided command will be put into a special cell, and depending on your preference settings, Mathematica may evaluate it when the file is opened; in which case all you need to do is open the file , use the "Open..." command in the "File" menu, and display the "OK" dialog box asking about initializing the cells. If there is no such dialog box, you can use the "Evaluate" command of the "Evaluate Initialization" command. "Kernel" menu in the submenu.)
Method 2
Use the Get command. This can be automated to varying degrees. More details below.
Basic usage of the Get command
Get[your_package_name.m]
Where your_package_name.m is the name of the file package (usually the package is suffixed with .m, but this is not absolutely necessary).
Enter An alternative to the Get command is to use two less-than signs:
<< your_package_name.m
When you run this command, one of the following two things will happen
1.Mathematica reads the file and evaluates The command
2.Mathematica cannot find the file and returns an error message.
Note: The .m file is also a code file in Matlab and Objective-C source code files.
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