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C++: Difference between revisions
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__FORCETOC__ | __FORCETOC__ | ||
=Usage= | ==Usage== | ||
How to do things using the [https://en.wikipedia.org/wiki/C%2B%2B_Standard_Library C++ standard library (stdlib)]. | How to do things using the [https://en.wikipedia.org/wiki/C%2B%2B_Standard_Library C++ standard library (stdlib)]. | ||
==Compilation== | ===Compilation=== | ||
=== | ====g++==== | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
g++ my_driver.c [-Iincludefolder] -o my_program.out | g++ my_driver.c [-Iincludefolder] -o my_program.out | ||
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* <code>-std=c++17</code> for C++17 support | * <code>-std=c++17</code> for C++17 support | ||
* <code>-O3</code> for level 3 optmizations | * <code>-O3</code> for level 3 optmizations | ||
==Strings== | ===Strings=== | ||
===String Interpolation=== | ====String Interpolation==== | ||
[https://stackoverflow.com/questions/10410023/string-format-alternative-in-c Reference] | [https://stackoverflow.com/questions/10410023/string-format-alternative-in-c Reference] | ||
<syntaxhighlight lang="C++"> | <syntaxhighlight lang="C++"> | ||
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} | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
==Filesystem== | ===Filesystem=== | ||
===Reading and Writing=== | ====Reading and Writing==== | ||
Reading and writing is done using <code>fstream</code>.<br> | Reading and writing is done using <code>fstream</code>.<br> | ||
If you don't need r/w, use <code>istream</code> for reading or <code>ostream</code> for writing.<br> | If you don't need r/w, use <code>istream</code> for reading or <code>ostream</code> for writing.<br> | ||
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</syntaxhighlight> | </syntaxhighlight> | ||
==Regular Expressions== | ===Regular Expressions=== | ||
[https://en.cppreference.com/w/cpp/regex Reference] | [https://en.cppreference.com/w/cpp/regex Reference] | ||
<!-- | <!-- | ||
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--> | --> | ||
==Threading== | ===Threading=== | ||
=== Sleep === | ==== Sleep ==== | ||
<syntaxhighlight lang="C++"> | <syntaxhighlight lang="C++"> | ||
std::this_thread::sleep_for(std::chrono::milliseconds(1)); | std::this_thread::sleep_for(std::chrono::milliseconds(1)); | ||
</syntaxhighlight > | </syntaxhighlight > | ||
==Memory== | ===Memory=== | ||
=== Garbage Collection === | ==== Garbage Collection ==== | ||
Traditional C++ does not have garbage collection. | Traditional C++ does not have garbage collection. | ||
After using `new` to allocate an object, use `delete` to deallocate it. | After using `new` to allocate an object, use `delete` to deallocate it. | ||
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=Programming Styles= | ==Programming Styles== | ||
==Modern C++== | ===Modern C++=== | ||
[https://github.com/rigtorp/awesome-modern-cpp List of resources]<br> | [https://github.com/rigtorp/awesome-modern-cpp List of resources]<br> | ||
Prefer newer std functions available in C++17.<br> | Prefer newer std functions available in C++17.<br> | ||
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*Don't use anything from STL that allocates memory, unless you don't care about memory management. | *Don't use anything from STL that allocates memory, unless you don't care about memory management. | ||
=Boost= | ==Boost== | ||
=STL= | ==STL== | ||