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c++ Programming Glossary: tryIs there a difference in C++ between copy initialization and direct initialization? http://stackoverflow.com/questions/1051379/is-there-a-difference-in-c-between-copy-initialization-and-direct-initializati first doesn't know anything about conversion. It will just try to call a constructor. In this case the following constructor..
http://stackoverflow.com/questions/1120140/csv-parser-in-c I've never used Boost's Spirit but am willing to try it. Is it overkill bloated or is it fast and efficient Does..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array way every 3 times you guess the same... In other words you try to identify a pattern and follow it. This is more or less how.. to optimize the branch into a conditional move you can try some hacks if you are willing to sacrifice readability for performance...
Undefined, unspecified and implementation-defined behavior http://stackoverflow.com/questions/2397984/undefined-unspecified-and-implementation-defined-behavior the string literal hello n and the two assignments below try to modify that string literal. What does this program do According..
When does invoking a member function on a null instance result in undefined behavior? http://stackoverflow.com/questions/2474018/when-does-invoking-a-member-function-on-a-null-instance-result-in-undefined-beha stated. Notes are non normative. However one can try to deduced it from §3.10 2 An lvalue refers to an object or..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom operator within its implementation and we'd ultimately be trying to define the assignment operator in terms of itself Not.. us from subtle bugs such as deleting the array only to try and copy it . But in all other cases it merely serves to slow.. to be a valid concern and indeed it requires non trivial try catch clauses this is a non issue. That's because a class should..
What are all the common undefined behaviour that a C++ programmer should know about? [closed] http://stackoverflow.com/questions/367633/what-are-all-the-common-undefined-behaviour-that-a-c-programmer-should-know-ab value returning function directly or by flowing off from a try block Multiple different definitions for the same entity class..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c file Java solves the second problem using a finally clause try File file new File path to file Do stuff with file finally file.close.. can do some cleverness to speed things up. So let's try a different example using our File class. Let's say we want..
What are Aggregates and PODs and how/why are they special? http://stackoverflow.com/questions/4178175/what-are-aggregates-and-pods-and-how-why-are-they-special . Now that we know what's special about aggregates let's try to understand the restrictions on classes that is why they are.. library that can be used from C and even .NET you should try to make all your exported functions take and return only parameters..
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 the overhead of the object will most likely crash when you try to use the broken object as will overwriting links that is stored..
What are the differences between pointer variable and reference variable in C++? http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c be assigned NULL directly whereas reference cannot. If you try hard enough and you know how you can make the address of a reference.. can make the address of a reference NULL. Likewise if you try hard enough you can have a reference to a pointer and then that..
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 been found then U is not one of the types T1...Tn and I try to typedef an array with negative size. c templates c 11 c.. should be handled in another answer or another FAQ entry. In order to parse a C program you need to know for certain..
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 in. You didn't make a contract with them that said if I try to sneak back into my room later you are required to stop me... allow you to break the rules of the system. If you try to do something illegal and foolish like going back into a room..
Singleton: How should it be used http://stackoverflow.com/questions/86582/singleton-how-should-it-be-used a Singleton if If you want to save memory If you want to try something new If you want to show off how much you know Because..
http://stackoverflow.com/questions/1115876/autocompletion-in-vim . c vim ide autocomplete share improve this question Try YouCompleteMe . It uses Clang through the libclang interface..
Problems with Singleton Pattern http://stackoverflow.com/questions/1392315/problems-with-singleton-pattern parameter. But this approach bites for the reasons above. Try to never use a singleton if you can. Although they may seem..
Compile time sizeof_array without using a macro http://stackoverflow.com/questions/1500363/compile-time-sizeof-array-without-using-a-macro c metaprogramming puzzle share improve this question Try the following from here template typename T size_t N char _ArraySizeHelper..
http://stackoverflow.com/questions/1744665/need-help-with-getline str line Thanks c getline share improve this question Try cout Enter name cin.ignore getline cin str share improve this..
strange output in comparison of float with float literal http://stackoverflow.com/questions/1839422/strange-output-in-comparison-of-float-with-float-literal in your statement if f 0.7 the 0.7 is treated as a double. Try 0.7f to ensure the value is treated as a float if f 0.7f But..
C++ template member function of template class called from template function http://stackoverflow.com/questions/1840253/c-template-member-function-of-template-class-called-from-template-function error. c templates share improve this question Try the following code template class T void g A T a a.template..
gcc - significance of -pthread flag when compiling http://stackoverflow.com/questions/2127797/gcc-significance-of-pthread-flag-when-compiling c c linux pthreads share improve this question Try gcc dumpspecs grep pthread and look for anything that starts..
Reading from text file until EOF repeats last line http://stackoverflow.com/questions/21647/reading-from-text-file-until-eof-repeats-last-line the loop condition and this time you're out of the loop. Try this while true int x iFile x if iFile.eof break cerr x endl..
Undefined reference to static class member http://stackoverflow.com/questions/272900/undefined-reference-to-static-class-member the static member somewhere after the class definition . Try this class Foo ... const int Foo MEMBER int main ... That should..
What does int argc, char *argv[] mean? http://stackoverflow.com/questions/3024197/what-does-int-argc-char-argv-mean if you do not intend to process command line arguments. Try the following program #include iostream int main int argc char..
how do I validate user input as a double in C++? http://stackoverflow.com/questions/3273993/how-do-i-validate-user-input-as-a-double-in-c c validation double cin share improve this question Try this while 1 if cin x valid number break else not a valid number..
http://stackoverflow.com/questions/3413470/what-is-stdmove state avoiding to copy all data. This would be C valid. Try googling for move semantics rvalue perfect forwarding. share..
Potential Problem in “Swapping values of two variables without using a third variable” http://stackoverflow.com/questions/3741440/potential-problem-in-swapping-values-of-two-variables-without-using-a-third-var the value of a more than once between two sequence points. Try writing although not foolproof a ^ b b ^ a a ^ b instead of..
Why is there no call to the constructor? http://stackoverflow.com/questions/3810570/why-is-there-no-call-to-the-constructor a function. What you want to write is Class object Try it out. You may also be interested in the most vexing parse..
How do I get started in embedded programming? [closed] http://stackoverflow.com/questions/45247/how-do-i-get-started-in-embedded-programming get started in embedded systems. Get a micro controller. Try starting with a demonstration board . they are cheap now Dive.. turn on LEDs play with timers Subscribe to Hack a Day Try a more ambitious project involving external components accelerometers..
The program can't start because libgcc_s_dw2-1.dll is missing http://stackoverflow.com/questions/4702732/the-program-cant-start-because-libgcc-s-dw2-1-dll-is-missing because libgcc_s_dw2 1.dll is missing from your computer. Try reinstalling the program to fix this problem. So what is the..
C/C++ Free alternative to Lint? [closed] http://stackoverflow.com/questions/632057/c-c-free-alternative-to-lint c c code analysis lint share improve this question Try cppcheck found here http cppcheck.wiki.sourceforge.net Here's..
C++, __try and try/catch/finally http://stackoverflow.com/questions/7049502/c-try-and-try-catch-finally C Code Generation Enable C Exceptions setting in important Try it both with EHsc the default and EHa to see the difference..
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