#preprocessor

[tinchicus]

C++ / preprocessor

Hoy les traigo un tema heredado de C que nos permite pre procesar algunos temas antes de compilarlo. Espero les sea de utilidad y buen finde!

Bienvenidos sean a este post, hoy veremos un tema heredado de C. Los preprocessor son una serie de rutinas pensadas en dejar lista para ser compilados. Estos trabajan mediante directivas de preprocessor. Algunas ya las hemos visto: #include, #define, #pragma once. Si bien estas no representan instrucciones de programas, si son comandos para el preprocessor para indicarle que hacer con el codigo…

C++ / preprocessor

[vibhu-19]

PHP

PHP code is usually processed on a web server by a PHP interpreter implemented as a module, a daemon or as a Common Gateway Interface (CGI) executable. On a web server, the result of the interpreted and executed PHP code – which may be any type of data, such as generated HTML or binary image data – would form the whole or part of an HTTP response. Various web template systems, web content management systems, and web frameworks exist which can be employed to orchestrate or facilitate the generation of that response. Additionally, PHP can be used for many programming tasks outside the web context, such as standalone graphical applications[14] and robotic drone control.[15] PHP code can also be directly executed from the command line.

The standard PHP interpreter, powered by the Zend Engine, is free software released under the PHP License. PHP has been widely ported and can be deployed on most web servers on a variety of operating systems and platforms.[16]

The PHP language evolved without a written formal specification or standard until 2014, with the original implementation acting as the de facto standard which other implementations aimed to follow. Since 2014, work has gone on to create a formal PHP specification.[17]

W3Techs reports that, as of January 2023, "PHP is used by 77.8% of all the websites whose server-side programming language we know."[18] It also reports that only 8% of PHP users use the currently supported 8.x versions. Most use unsupported PHP 7, more specifically 7.4, and even PHP 5 has 23% of the use, also not supported with security updates, known to have serious security vulnerabilities.

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[44dagainagain]

Was this a macro? (Adventures in Reverse Engineering)

Game: Diablo Pre-Release Demo Langauge: C++ Toolchain: Visual C++ 4.0 (suspected)

One of the tricky things about decompiling is that a lot is lost when the source goes through a compiler:

comments are thrown away

human-readable names are discarded

the preprocessor kicks in and copy-pastes code

variables can be optimized away

In this case, let's look at the preprocessor. The preprocessor runs pretty early on and expands macros into new code. This is indistinguishable from the developer copy-pasting a block of code. Compiler Explorer backs us up here if you look at this sample, both functions produce the same assembly despite seemingly being implemented differently.

So when I see things like this:

or this

or this

Did the developers copy-paste these function calls or did they make a macro?

To some extent, the answer is "who cares". Although it largely depends on what your goals are. If you want source that produces the same binary (which is what I'm doing) then both copy-paste and macros are viable options. If you're aiming to be source exact then... good luck.

For me, compiling to the same binary gives me confidence that I have a working version that I can build on. I don't the same exact source.

[prachivermablr]

Macros in C Programming - Don't Consider it as an Outdated Feature - DataFlair

Macros in C language are the piece of code based on the #define preprocessor. Let's discuss different types of Macros and Predefined Macros with examples

[desymbol]

Which is the best CSS preprocessor?

Which is the best CSS preprocessor?

There are a number of CSS preprocessors on the market. You’ve probably heard of Less and Sass (if not, take a look at our article on what is Sass?), but there are a number of other options that might be better suited to your needs. Here, we take a closer look at all the different preprocessor around, and the pros and cons of each one. Use the quick links on the right to jump to a particular…

View On WordPress

[thedigitalbridges]

PHP stands for Hypertext Preprocessor

PHP stands for Hypertext Preprocessor #Preprocessor

[clye]

[dailyfrontendlink]

1) That mostly everything you need in preprocessors currently is available in pure CSS 2) How to make it work cross-browser 3) The real examples of already migrated sites