c++ Programming Glossary: usuallywhat is the difference between const int*, const int * const, int const * http://stackoverflow.com/questions/1143262/what-is-the-difference-between-const-int-const-int-const-int-const with out the extra syntactic sugar. Because of this fact usually you would use a reference where you would use a T const pointer..
Variable length arrays in C++? http://stackoverflow.com/questions/1887097/variable-length-arrays-in-c to create a potential large array on the stack which usually has only little space available isn't good. The argument is..
What should main() return in C and C++? http://stackoverflow.com/questions/204476/what-should-main-return-in-c-and-c by a 0 return value from main . Abnormal termination is usually signalled by a non zero return but there is no standard for..
Read whole ASCII file into C++ std::string http://stackoverflow.com/questions/2602013/read-whole-ascii-file-into-c-stdstring this case won't actually give you a compile error like it usually does but will give you interesting read wrong results. Following..
Why have header files and .cpp files in C++? [closed] http://stackoverflow.com/questions/333889/why-have-header-files-and-cpp-files-in-c the implementation changes. It's not perfect and you would usually resort to techniques like the Pimpl Idiom to properly separate..
What are rvalues, lvalues, xvalues, glvalues, and prvalues? http://stackoverflow.com/questions/3601602/what-are-rvalues-lvalues-xvalues-glvalues-and-prvalues An xvalue an 𩃀Xpiring value also refers to an object usually near the end of its lifetime so that its resources may be moved..
http://stackoverflow.com/questions/402283/stdwstring-vs-stdstring . char vs. wchar_t char is supposed to hold a character usually a 1 byte character. wchar_t is supposed to hold a wide character.. exercise So when working with a char on Linux you should usually end up using Unicode without even knowing it. And as std string.. ol邿 if you use Windows 1251 . Thus historical apps will usually still work the same old way. For Unicode based applications..
Pass by Reference / Value in C++ http://stackoverflow.com/questions/410593/pass-by-reference-value-in-c by reference . When some people say pass by reference they usually mean not the argument itself but rather the object being referenced..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three object of the class is responsible for that resource. That usually means the resource is acquired in the constructor or passed..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points In an expression statement the next sequence point is usually at the terminating semicolon and the previous sequence point..
http://stackoverflow.com/questions/4421706/operator-overloading same rules be implemented as a member function. but it is usually not a good idea to overload it. The standard library 䏭 algorithms.. increment over postfix increment. While compilers can usually optimize away the additional work of postfix increment for built.. a copy of its result. Of course returning a reference is usually more efficient than returning a copy but in the case of operator..
What are the barriers to understanding pointers and what can be done to overcome them? http://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome detect that it's actually just one house. Note This is usually the concept that I have the most problem explaining to people..
Is short-circuiting boolean operators mandated in C/C++? And evaluation order? http://stackoverflow.com/questions/628526/is-short-circuiting-boolean-operators-mandated-in-c-c-and-evaluation-order list without an implied sequence point between them. It is usually not recommended to overload these operators in C unless you..
WChars, Encodings, Standards and Portability http://stackoverflow.com/questions/6300804/wchars-encodings-standards-and-portability wrapper library or lots of #ifdef s. Encoding agnosticity usually just doesn't work in practice especially if you want to be portable...
Can a local variable's memory be accessed outside its scope? http://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope out ahead of time. For this reason local variables are usually generated as storage on a stack data structure because a stack..
#pragma once vs include guards? http://stackoverflow.com/questions/1143936/pragma-once-vs-include-guards coupling between the included file and the including file. Usually it's ok because the guard should be based on the file name and..
http://stackoverflow.com/questions/195853/spinlock-versus-semaphore other way around a lock is a special case of a semaphore . Usually but not necessarily spinlocks are only valid within one process.. the lock and proceed with a critical section of code. Usually this means code that modifies some data shared by several threads...
http://stackoverflow.com/questions/205059/is-there-a-c-decompiler as IDA Pro can produce C alike code for you to work with. Usually it is very rough though at least when I used it a couple of..
C++: Life span of temporary arguments? http://stackoverflow.com/questions/2506793/c-life-span-of-temporary-arguments that isn't a sub expression of some other expression. Usually this means it ends at the or for if while switch etc. denoting..
demote boost::function to a plain function pointer http://stackoverflow.com/questions/282372/demote-boostfunction-to-a-plain-function-pointer signature figures out which function to call and calls it. Usually C callbacks will have some kind of a void for 'user data' that's..
what is/are the purpose(s) of inline? http://stackoverflow.com/questions/3647053/what-is-are-the-purposes-of-inline Why not help the compiler help you generate less code Usually if the prolog epilog part incurs more cost than having it inline..
Why should I avoid multiple inheritance in C++? http://stackoverflow.com/questions/406081/why-should-i-avoid-multiple-inheritance-in-c then you did something wrong. 2. The Diamond of Dread Usually you have a class A and then B and C both inherit from A. And.. above. In fact this is how things are done in Java. Usually what you mean when C inherits from A and B is that users can.. 4. Do you really need Multiple Inheritance Sometimes yes. Usually your C class is inheriting from A and B and A and B are two..
http://stackoverflow.com/questions/408670/stack-static-and-heap-in-c a global variable even if you cannot access it globally. Usually there is an address for it that is in the executable itself...
What is the proper declaration of main? http://stackoverflow.com/questions/4207134/what-is-the-proper-declaration-of-main argc is the number of arguments in the argv array. Usually argv 0 contains the name of the program but this is not always..
Are there any macros to determine if my code is being compiled to Windows? [duplicate] http://stackoverflow.com/questions/430424/are-there-any-macros-to-determine-if-my-code-is-being-compiled-to-windows if the target environment is not exclusively windows. Usually it's __WIN32__ but not always. #if defined __WIN32__ Windows..
Performance of built-in types : char vs short vs int vs. float vs. double http://stackoverflow.com/questions/5069489/performance-of-built-in-types-char-vs-short-vs-int-vs-float-vs-double built in types char vs short vs int vs. float vs. double . Usually we don't consider such performance difference if any in our..
Where and why do I have to put the “template” and “typename” keywords? http://stackoverflow.com/questions/610245/where-and-why-do-i-have-to-put-the-template-and-typename-keywords should suffice as an example t f How should this be parsed Usually for simple languages for parsing you don't need to know the..
http://stackoverflow.com/questions/69112/what-is-a-symbol-table here. First there's the symbol table in your object files. Usually a C or C compiler compiles a single source file into an object..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops look like you are allocating all the arrays separately. Usually when such large allocations are requested the allocator will..
Forward declaration of nested types/classes in C++ http://stackoverflow.com/questions/951234/forward-declaration-of-nested-types-classes-in-c C public typedef struct class ... D ... A B someField Usually you can declare a class name class A But you can't forward declare..
http://stackoverflow.com/questions/9568150/what-is-a-c-delegate int double f can be set to about anything in this answer Usually more useful as a parameter to another functions Option 6 binding..
When should I make explicit use of the `this` pointer? http://stackoverflow.com/questions/993352/when-should-i-make-explicit-use-of-the-this-pointer method of a class c this share improve this question Usually you do not have to this is implied. Sometimes there is a name..
|