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The user types in expressions at the command line, or directs the IDE to transmit them to the Lisp system. Lisp reads the entered expressions, evaluates them, and prints the result. For this reason, the Lisp command line is called a read–eval–print loop . The basic operation of the REPL is as follows.
The print command allowed specifying one of many possible local printer interfaces, [23] and could make use of networked printers using the net command. [24] A maximum number of files and a maximum buffer size could be specified, and further command-line options allowed adding and removing files from the queue. [23]
Code that works around those may need to be changed. Code that uses locals() for simple templating, or print debugging, will continue to work correctly." [64] Some (more) standard library modules and many deprecated classes, functions and methods, will be removed in Python 3.15 or 3.16. [65] [66]
This is an accepted version of this page This is the latest accepted revision, reviewed on 24 January 2025. Language for communicating instructions to a machine The source code for a computer program in C. The gray lines are comments that explain the program to humans. When compiled and run, it will give the output "Hello, world!". A programming language is a system of notation for writing ...
A command-line system may require paper or online manuals for the user's reference, although often a help option provides a concise review of the options of a command. The command-line environment may not provide graphical enhancements such as different fonts or extended edit windows found in a GUI.
The document contains only properly encoded legal Unicode characters. None of the special syntax characters such as < and & appear except when performing their markup-delineation roles. The start-tag, end-tag, and empty-element tag that delimit elements are correctly nested, with none missing and none overlapping.
JavaScript also uses tilde as bitwise NOT. Because bitwise operators work on integers, and numbers in JavaScript are 64 bit floating point numbers, the operator converts numbers to a 32-bit signed integer before it performing the negation. [69] The conversion truncates the fractional part and most significant bits.
Refined Printing Command Stream, also known as RPCS, is a vector-based [1] printing/duplicating control protocol, designed for communication between Microsoft Windows PC clients, and several lines of Ricoh copiers. Drivers provided by Ricoh install the chosen copier to behave as a printer device.