The correct title of this article is #pragma once. The omission of the # is due to technical restrictions.
In the C and C++ programming languages, #pragma once is a non-standard but widely supported preprocessor directive designed to cause the current header file to be included only once in a single compilation.[1] Thus, #pragma once serves the same purpose as include guards, but with several advantages, including less code, avoidance of name clashes, and sometimes improvement in compilation speed.[2] On the other hand, #pragma once is not necessarily available in all compilers and its implementation is tricky and might not always be reliable.
^"once". Microsoft Docs. 3 November 2016. Retrieved 25 July 2019.
^"Games from Within: Even More Experiments with Includes". 2005-01-25. Archived from the original on September 30, 2008. Retrieved 2013-08-19.
languages, #pragmaonce is a non-standard but widely supported preprocessor directive designed to cause the current header file to be included only once in a...
(programming), also known as a pragma or pragmat in several programming languages #pragmaoncePragma (love), a model of love Pragma (periodical), a 1980's publication...
non-standard #pragmaonce directive. This directive, inserted at the top of a header file, will ensure that the file is included only once. The Objective-C...
source file). #include often compels the use of #include guards or #pragmaonce to prevent double inclusion. The if–else directives #if, #ifdef, #ifndef...
a header file from being included more than once is with the '#pragmaonce' directive. If '#pragmaonce' is seen when scanning a header file, that file...
use #pragma directives to specify packing inside source files. Here is an example: #pragma pack(push) /* push current alignment to stack */ #pragma pack(1)...
explicit hints, generally as compiler directives (pragmas). In the Ada programming language, there exists a pragma for inline functions. Functions in Common Lisp...
environment variables. In C/C++, OpenMP uses #pragmas. The OpenMP specific pragmas are listed below. The pragma omp parallel is used to fork additional threads...
LANGUAGE pragma was specified. By 2010, dozens of extensions to the language were in wide use, and GHC (among other compilers) provided the LANGUAGE pragma to...
with a text editor (standard as part of any Operating System software). Once the basic files are created a KiSS viewer is used to display and fine tune...
height of limerence, thoughts of the limerent object (or person) are at once persistent, involuntary, and intrusive. Such "intrusive thoughts about the...
and Basil Fawlty". Journal of Pragmatics. 41 (3): 470–483. doi:10.1016/j.pragma.2008.05.017. "1980 John Cleese Talks about QUEEN". YouTube. Sherwin, Adam...
(2010). Strategic Maneuvering in Argumentative Discourse: Extending the Pragma-dialectical Theory of Argumentation. John Benjamins. p. 203. ISBN 978-9027211194...
political debate". Journal of Pragmatics. 43 (15): 3707–3719. doi:10.1016/j.pragma.2011.09.003. Poser, William J. (1990). "Evidence for foot structure in Japanese"...
2017) Pascal Cuoq (TrustInSoft, France) and John Regehr (University of Utah, USA) Corrected version of the C99 standard. See at section 6.10.6 for #pragma...
stack based calling convention. The Watcom C/C++ compiler also uses the #pragma aux directive that allows the user to specify their own calling convention...
improved mental health and cognitive ability. However, this association stops once around five friends is reached, after which having more friends is no longer...
in young children". Journal of Pragmatics. 156: 100–109. doi:10.1016/j.pragma.2018.12.012. ISSN 0378-2166. S2CID 149933527. Jackson, M.A. (2002). "Carnegie...
It is known to work on Mac OS X since at least 2006. #include <fenv.h> #pragma STDC FENV_ACCESS ON // Sets DAZ and FTZ, clobbering other CSR settings....
merciful (four times), favour (three times) and good, goodliness, pity (once each). Only two instances of the noun in its negative sense are in the text...
through hundreds of thousands of accounts and connect with multiple people at once which in return, gives the user more options and more opportunity to find...
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