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The Extended Pascal standard extends Pascal to support many things C supports, which the original standard Pascal did not, in a type safer manner. For example, schema types support (besides other uses) variable-length arrays while keeping the type-safety of mandatory carrying the array dimension with the array, allowing automatic run-time ...
Where "new" is the standard routine in Pascal for allocating memory for a pointer, and "hex" is presumably a routine to print the hexadecimal string describing the value of an integer. This would allow the display of the address of a pointer, something which is not normally permitted. (Pointers cannot be read or written, only assigned.)
Dev-Pascal is a Pascal IDE that was designed in Borland Delphi and which supports Free Pascal and GNU Pascal as backends. Lazarus is a free Delphi-like visual cross-platform IDE for rapid application development (RAD). Based on Free Pascal, Lazarus is available for numerous platforms including Linux, FreeBSD, macOS and Microsoft Windows.
This may be compared to the option type in ML or the Maybe type in Haskell, and can be seen as a tagged pointer: a tagged union (with an encoded tag) of two types: Valid pointers, A null pointer type with only one value, null, indicating an exceptional condition. Unfortunately, C compilers do not verify that the null case is always handled.
RTL (C) Callee Return pointer on stack if not member function. Also supported by GCC. register: Delphi, Free Pascal, Linux [30] EAX, EDX, ECX: LTR (Pascal) Callee thiscall: Windows (Microsoft Visual C++) ECX: RTL (C) Callee Default for member functions. vectorcall: Windows (Microsoft Visual C++) ECX, EDX, [XY]MM0–5 RTL (C) Callee Extended ...
An autorelative pointer is a pointer whose value is interpreted as an offset from the address of the pointer itself; thus, if a data structure has an autorelative pointer member that points to some portion of the data structure itself, then the data structure may be relocated in memory without having to update the value of the auto relative ...
P-code machine; Pascal (programming language) Comparison of Pascal and C; Pointer (computer programming) Polymorphism (computer science) R. Reflective programming;
Thus, calling f x, where f:: a-> b-> c, yields a new function f2:: b-> c that can be called f2 b to produce c. The actual type specifications can consist of an actual type, such as Integer, or a general type variable that is used in parametric polymorphic functions, such as a, or b, or anyType. So we can write something like: functionName:: a ...