logOS is an imperative and partially object-oriented language based around the 'Desktop metaphor' that modern operating systems use. It was brainstormed with the unaffiliated Esolangs Discord server and implemented in Python by User:IFcoltransG in late 2019.
Programs are built-in objects, and their commands are methods or functions that transform text. Each program stores data in a buffer, a string that is manipulated whenever a program's commands are executed. Editor is a text editor used for manipulating the strings that are the lifeblood of any logOS algorithm. Calculator can parse arithmetic with order of operations. Email is used for IO. Terminal parses and executes logOS code, so can be used for control flow.
Editor write "Hello, world!" copy minimise Email paste send
rem "rem" starts a comment. rem Start a text editing program: Editor rem Input the appropriate words to the text editor: write "Hello, world!" rem Note that "write" only works while in the text editor. copy rem Bring up the Desktop: minimise rem Start up Email - the tool used for communicating with the user: Email paste rem Output whatever the Email program stores in its buffer to the user. send
A golfed version:
Email Hello, world! send
Editor rem Write out the main loop code. rem "write" without arguments writes a newline. write "switch Email" write write "refresh" write write "send" write write "switch Terminal" write rem The "run" command deletes the contents of the Terminal. write "paste" write write "run" rem Move the code to the clipboard cut minimise rem Boot up Email so the loop can switch to and from it. Email minimise Terminal paste rem Run the program's contents as logOS code: run
Editor paste\nswitch Email\nsend\nswitch Terminal\nrun replace "\n" with newline cut minimise LOOP paste minimise Email refresh copy switch Editor paste replace "1" with "switch LOOP\ncopy\nswitch Terminal\npaste\nrun" replace "\n" with a newline replace "0" with "rem" cut minimise Terminal paste run
The name is a combination of the word logos meaning reason and logic, and OS for Operating System. The log also represents the fact that source code looks like a transcript of a person accessing a computer. The language doesn't have any logos designed yet.