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The dynamic_cast operator in C++ is used for downcasting a reference or pointer to a more specific type in the class hierarchy. Unlike the static_cast, the target of the dynamic_cast must be a pointer or reference to class. Unlike static_cast and C-style typecast (where type check occurs while compiling), a type safety check is performed at ...
Downcasting is useful when the type of the value referenced by the Parent variable is known and often is used when passing a value as a parameter. In the below example, the method objectToString takes an Object parameter which is assumed to be of type String.
The word cast, on the other hand, refers to explicitly changing the interpretation of the bit pattern representing a value from one type to another. For example, 32 contiguous bits may be treated as an array of 32 Booleans, a 4-byte string, an unsigned 32-bit integer or an IEEE single precision floating point value.
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C, C++, C# Java, Kotlin JavaScript, TypeScript .NET Python Go, Ruby A code searching tool with an emphasis on finding software bugs. Search patterns are written in a query language which can search the AST and graphs (CFG, DFG, etc.) of supported languages. A plugin is available for Visual Studio. ConQAT (retired) 2015-02-01 Yes; ASL 2: Ada C# ...
Batch file: starting a parenthetical block can allow line continuation [6] Ruby: left parenthesis, left square bracket, or left curly bracket; Operator symbol. Ruby: as last object of line; comment may follow operator; AutoHotkey: As the first character of continued line; any expression operators except ++ and --, and a comma or a period [7]
The reinterpret cast technique from C/C++ also works in Pascal. This can be useful, when eg. reading dwords from a byte stream, and we want to treat them as float. Here is a working example, where we reinterpret-cast a dword to a float:
The type can be a reference or an enumerator. All types of conversions that are well-defined and allowed by the compiler are performed using static_cast. [2] [failed verification] The static_cast<> operator can be used for operations such as: converting a pointer of a base class to a pointer of a non-virtual derived class (downcasting);