Free Pascal

Free Pascal Compiler (FPC for short, and formerly known as FPK Pascal) is a free Pascal and Object Pascal compiler.

In addition to its own Object Pascal dialect, Free Pascal supports, to varying degrees, the dialects of several other compilers, including those of Turbo Pascal, Delphi, and some historical Macintosh compilers. The dialect is selected on a per-unit (module) basis, and more than one dialect can be used to produce a single program.

A member of the write once, compile anywhere philosophy, Free Pascal is available for many architectures and operating systems (see Targets). It has support for integration of assembly language and supports internal assembler in a number of dialects.

Separate projects exist to facilitate the development of cross-platform graphical applications, the most prominent one being the Lazarus IDE.

Supported dialects

Free Pascal adopted the de facto standard dialect of Pascal programmers, Borland Pascal and, later, Delphi. From version 2.0 on, the Delphi 7 compatibility has been continuously implemented or improved.

PP

PP, pp or P_p may refer to:

Computers and computing

Politics

Religion

Science, medicine and engineering

Pyrimidinylpiperazine

1-(2-Pyrimidinyl)piperazine (1-PP, 1-PmP) is a chemical compound and piperazine derivative. It is known to act as an α₂-adrenergic receptor antagonist, and as a 5-HT_1A receptor partial agonist to a much lesser extent. It does not appear to have any significant affinity for the D₂ or α₁-adrenergic receptors.

A number of pyrimidinylpiperazine derivatives are drugs, including:

The anxiolytics are also classified as azapirones due to the azaspirodecanedione moiety in their structures. 1-PP is a common metabolite of most or all of the listed agents.Alnespirone, binospirone, and enilospirone, despite being azapirones, are not piperazines and therefore do not metabolize to 1-PP, and while perospirone and tiospirone are piperazines, they are instead benzothiazole-substituted piperazines and do not metabolize to 1-PP either.