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- Dictionarybetter/ˈbɛtə/
adjective
- 1. more desirable, satisfactory, or effective: "we're hoping for better weather tomorrow" Similar Opposite
- 2. partly or fully recovered from illness, injury, or mental stress: "his leg was getting better" Similar Opposite
adverb
- 1. more excellently or effectively: "Jonathon could do better if he tried" Similar
noun
- 1. the better one; that which is better: "the Natural History Museum book is by far the better of the two"
- 2. one's superiors in social class or ability: dated, humorous "I'm not one to speak ill of my betters"
verb
- 1. improve on or surpass (an existing or previous level or achievement): "his account can hardly be bettered" Similar
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Oct 28, 2009 · Two special cases (1) static const is preferred within a class scope for class specific constants; (2) namespace or anonymous scope const is preferred over #define. I prefer Enums. Because it is hybrid of both. Doesn't occupy space unless you create a variable of it.
The difference is that #define is processed by the preprocessor doing what amounts to simple text replacement. Const values defined like this are not visible for the actual compiler, while a variable defined with the const modifier is an actual typed "variable" (well not really that variable). The disadvantage of #define is that is replaces ...
Feb 12, 2021 · 2. #define directives create macro substitution, while constexpr variables are special type of variables. They literally have nothing in common beside the fact that before constexpr (or even const) variables were available, macros were sometimes used when currently constexpr variable can be used. But both have wide area of applications which ...
Nov 4, 2009 · 810. It depends on what you need the value for. You (and everyone else so far) omitted the third alternative: static const int var = 5; #define var 5. enum { var = 5 }; Ignoring issues about the choice of name, then: If you need to pass a pointer around, you must use (1). Since (2) is apparently an option, you don't need to pass pointers around.
Jun 20, 2016 · 3. Using constants instead of #define is very much to be preferred. #define replaces the token dumbly in every place it appears, and can cause all sorts of unintended consequences. Passing values instead of using globals is good practice. It makes the code more flexible and modular, and more testable.
Jun 29, 2010 · #define ignores scoping, but allows you to use better typing facilities: lets you choose the constant type (either by using suffixes or by including an explicit cast into the definition). So, choose for yourself what is more important to you. For a state machine, enum might be a better choice, unless you have a good reason to control the type.
Jun 19, 2011 · Possible Duplicate: Inline functions vs Preprocessor macros. In C++ the inline function qualifier basically replaces the function as a #define directive, rather than making the function being called over and over again. Thus reducing overhead time, but at the same time increasing program size. If my understanding of inline function is correct ...
Dec 22, 2009 · 17. Constants allow you to specify a datatype, which is (usually) an advantage. Macros are much more flexible, and therefore can get you into much more trouble if you're not careful. Best practice is to use constants as much as possible, and use #define only when you really need a macro, not just a named literal value.
Dec 29, 2013 · enum is compile time constant with debug info with no storage allocation. const is allocated with a storage, depending on whether it is optimised away by the compiler with constant propagation. #define has no storage allocation. edited Sep 2, 2013 at 11:24. nhahtdh.
Apr 2, 2020 · First of all, std::cout is not a type, it's an object. Hence, use of. typedef std::cout std_cout; is not going to work. Use of. typedef std::string std_string; is legal. However, I have the following concerns. When a reader of code sees std_string, they will wonder what it means and will have to track down its definition.
