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Using Homebrew on MacOS, install this by brew install rlwrap, and on Ubuntu / Debian Linux, install this by sudo apt-get install rlwrap. In order to be able to use the arrow keys to navigate lines that were previously typed into the REPL, most of the SML compilers can benefit from the program rlwrap. sudo add-apt-repository ppa:kflarsen/mosml

Go to and find the latest release, e.g.Here are instructions for installing each of SML/NJ, Moscow ML and Poly/ML divided by operating system. That isn't essential for getting started, though. Moscow ML and Poly/ML are easy to get started with, but don't support the. To run the helloworld.sml right away when you entered sml console, just add the sml file name after sml. To run the above code directly in the sml console, just type the above code and it will print the string. SML/NJ is the most widely used, but has slightly difficult error messages for learning purposes. In sml console, type the following to run the program. MLton produces very optimized code, but has no REPL. You can invoke sml by giving a full file name /usr/local/bin/sml or, if the sml command is in a directory in your path, just type: sml Under Windows, you can run SML/NJ by double clicking on the SML icon. To run the helloworld.There is a dozen implementations of Standard ML. Another common place where the sml command might be installed is the directory /usr/local/bin. To run the above code directly in the sml console, just type the above code and it will print the string.ĥ. In sml console, type the following to run the programģ. Assume the above code is in a file called helloworld.sml, in the same directory where the helloworld.sml lives, launch the sml by typeĢ. Print "Hello World, this is my first SML program!!!"ġ. (*This is a comment: Hello World Program*) Sudo ln -s /usr/local/smlnj-110.74/bin/sml /usr/local/bin/sml

Note: smlnj-110.74 is the version name, it might be different from yours Make a symbolic link by the following command in the Terminal to make the SML accessible from every other directories. Install the dmg file you’ve downloaded, it will install it to this locationģ. From the above site, download the mac version of Standard ML.Ģ. Its source code files are often with the extension “.sml”.ġ. SML appeared in 1990 with formal specification, given as typing rules and operational semantics in the The Definition of Standard ML. Standard ML is a modern descendant of the ML programming language which is a functional programming language developed by Robin Milner and others at the University of Edinburgh in 1973.