C++: Difference between revisions

C++ (view source)

319 bytes added , 21 February 2022

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 [https://stackoverflow.com/questions/332030/when-should-static-cast-dynamic-cast-const-cast-and-reinterpret-cast-be-used Types of casts]
-C++ has several types of casts.
+C++ has several types of casts including:
-These are the main ones you should use.
+* [https://en.cppreference.com/w/cpp/language/static_cast <code>static_cast</code>] - your standard cast with conversion. Does not perform any checks.
-* <code>static_cast</code>
+* [https://en.cppreference.com/w/cpp/language/dynamic_cast <code>dynamic_cast</code>] - for casting objects with checking, requires a polymorphic base class (with a virtual function). Will return nullptr.
-* <code>dynamic_cast</code>
+* [https://en.cppreference.com/w/cpp/language/reinterpret_cast <code>reinterpret_cast</code>] - cast without any conversion, for directly dealing with binary data, equivalent to <code>*(T*)</code> in C.
-If you're casting between things but do not want to change the bit-pattern (e.g. binary data or pointers), you can also use <code>reinterpret_cast</code>.
 ====References====