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- Dictionaryconstant/ˈkɒnst(ə)nt/
adjective
- 1. occurring continuously over a period of time: "the constant background noise of the city" Similar Opposite
noun
- 1. a situation that does not change: "the condition of struggle remained a constant"
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Apr 21, 2010 · Note that back in 2010, this answer made sense, but ever since Python 3.4's release in 2014, the answer is "you want to use enum for this", which lets you set an immutable with optional value (because there are two kinds of constants: (1) ones used as a stable key, in which the actual value is irrelevant: the const itself is the value, and (2) ones used for store fixed values)
Nov 5, 2010 · Yes, because all macros (which are what #defines define) are in a single namespace and they take effect everywhere. Variables, including const-qualified variables, can be encapsulated in classes and namespaces. Macros are used in C because in C, a const-qualified variable is not actually a constant, it is just a variable that cannot be modified.
Nov 29, 2009 · in c language: #define (e.g. #define counter 100) in assembly language: equ (e.g. counter equ 100) in c# language: according to msdn refrence: You use #define to define a symbol. When you use the symbol as the expression that's passed to the #if directive, the expression will evaluate to true, as the following example shows: # define DEBUG
May 18, 2017 · If you use the @JvmField annotation then after it compiles the constant gets put in for you the way you would call it in java. Just like you would call it in java the compiler will replace that for you when you call the companion constant in code. However, if you use the const keyword then the value of the constant gets inlined.
Jun 14, 2023 · -define:this_is_my_global_preprocessor_constant -define:another_global_preprocessor_constant In the project, in any player or editor c# script: #if THIS_IS_MY_GLOBAL_PREPROCESSOR_CONSTANT Debug.Log("THIS_IS_MY_GLOBAL_PREPROCESSOR_CONSTANT is defined"); // compiles #else Debug.Log("THIS_IS_MY_GLOBAL_PREPROCESSOR_CONSTANT is not defined"); #endif
Oct 9, 2012 · indeed, it isn't compile-time constant. However, the definition "In computer programming, a constant is a value that cannot be altered by the program during normal execution, i.e., the value is constant" does not strictly require it being compile-time constant, but a run-time one, so this answer is still correct. –
May 1, 2011 · Like the C compiler directive, `define is global for the compilation. If your code is ever going to be used with code you don't control you will need to be careful here. Parameters are always local to the module scope so identically named parameters in different design elements will not conflict with each other.
While I agree with "It is probably a better practice to define a CSS class and re-use it on each element you want to assign the color to ", a problem with this approach is where the colour is to be applied for different attributes - for example I have an SVG rect element that should be the same colour as the background for some li element, the svg rect requires fill:red while the li element ...
Nov 4, 2009 · The compiler might add two consts at run time, but add two #defines at compile time. A #define constant may be converted into one or more MOV [immediate] instructions, which means the constant is effectively stored in program memory. A const constant will usually be stored in a separate section in data memory such as .const or .rodata.
Oct 29, 2009 · Constant initializer allowed by C++ Standard only for integral or enumeration types. See 9.4.2/4 for details: If a static data member is of const integral or const enumeration type, its declaration in the class definition can specify a constant-initializer which shall be an integral constant expression (5.19).
