.M File Extension

.M File Extension

File Type 1

Objective-C Implementation File

Developer Apple
Popularity
3.6  |  181 Votes
Category Developer Files
Format Text

What is an M file?

An M file is a class implementation file used by programs written in Objective-C. It begins with the @implementation directive and initializes variables and functions that can be referenced by other Objective-C source files. M files may also reference header (.H) files.

More Information

Objective-C is most commonly used to implement applications for Apple's Mac OS X and iOS operating systems. Apple's Cocoa API provides the Objective-C programming interface for Mac OS X, and the iOS API provides the programming interface for the iOS platform.

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Programs that open M files

Windows
Free
Free
Linux
Free
Free
Apple complier (cc)
Stepstone compiler (objcc)
Updated August 24, 2016
File Type 2

MATLAB Source Code File

Developer The MathWorks
Popularity
3.5  |  77 Votes
Category Developer Files
Format Text

What is an M file?

An M file is a text file used by MATLAB, an application used for mathematical computations. It can store a script, class, or an individual function in the MATLAB language. M files are used for executing algorithms, plotting graphs, and performing other mathematical operations.

Programs that open M files

Windows
Mac
Linux
Updated September 28, 2017
File Type 3

Mercury Source Code File

Developer The Mercury Project
Popularity
3.5  |  22 Votes
Category Developer Files
Format Text

What is an M file?

Source code file written using Mercury, a functional programming language that was developed at the University of Melbourne, Australia; saved using plain text formatting and uses syntax similar to Prolog.

More Information

Mercury was written in order to provide a robust language for large real world applications. It includes several error-checking features not provided by other logic programming languages. For example, the language incorporates static analysis that can catch type checking errors before runtime. This enables greater assurance over the correctness of the program and also allows the compiler to generate more efficient code. However, the developer must specify each of the "type," "mode," and "determinism" constructs while programming, which is not necessarily required by other languages.

NOTE: The developmental version of the Mercury compiler is currently distributed in a source code format and does not include compiler binaries. However, a Windows port of Mercury, called winmercury, includes binaries. It also includes Vim syntax highlighting files for source code editing.

Programs that open M files

Windows
Free
Included with OS
Linux
Updated July 19, 2011
File Type 4

Mathematica Input File

Developer Wolfram Research
Popularity
3.3  |  22 Votes
Category Data Files
Format Text

What is an M file?

Contains functions or a set of instructions used by the Mathematica, a program for creating and running mathematical functions; saved in a text format, which can be viewed and edited with a basic text editor.

More Information

Files named "init.m" are initialization files that contain settings that are loaded when the Mathematica program is opened.

Programs that open M files

Windows
Mac
Included with OS
Linux
Updated October 19, 2010
File Type 5

PC-98 Game Music File

Developer N/A
Popularity
3.3  |  13 Votes
Category Audio Files
Format N/A

What is an M file?

Sound file format used by Japanese PC-98 computers and emulators; contains synthesizer music that can be used as instruments to create songs; referenced in order to know what music to play.

More Information

NOTE: In order to play M files with FMPMD2000, you need to download the WinFMP.dll and PMDWin.dll files, which are available from the same location.

Programs that open M files

Windows
Updated May 20, 2014

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