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Inlining (Delphi and Delphi Prism Cross Reference Guide)

By Mike Prestwood

Delphi versus Delphi Prism: A side by side comparison between Delphi and Delphi Prism.

 
Language Details
 

Language Details is kind of a catch all for stuff that didn't make it into language basics nor any other category.

Inlining

[Other Languages] 

General Info: Inline Routines

Instead of calling a routine, you move the code from the routine itself and expand it in place of the call. In addition to manual inlining, some languages support automatic inlining where the compiler or some other pre-compiler decides when to inline a code routine. Also, some languages allow for developer defined inlining where the developer can suggest and/or force the inlining of a code routine. Inlining can optimize your code for speed by saving a call and return, and parameter management.

Languages Focus

Does it support inlining? If so, does it support developer defined inlining? Does it support automatic inlining? Both?

Delphi:   Inline

Delphi introduced developer defined function and procedure inlining with Delphi 2005. Use the inline keyword to tell the compiler to try to inline a routine (a compiler hint). Since Delphi will only try to inline the routine, make sure you test for speed because inlining a routine can lead to slower code under some circumstances.

Syntax Example:  
function Add(a, b: Integer): Integer; inline;
begin
end;
Delphi Prism:   Automatic

In Prism, inlining is automatically done for you by the JIT compiler for all languages and in general leads to faster code for all programmers whether they are aware of inlining or not.

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