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Editorial Team
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Asked: 2026-05-22T22:30:31+00:00

When I’m using big frameworks like the Three20 Framework, I always have the choice

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When I’m using big frameworks like the Three20 Framework,
I always have the choice whether to #import the whole framework or to #import only the single file of it i’d need.

I guess there’s a difference in compilation-overhead since it has to open all files of the framework, but is there also a run-time difference? like bigger memory-usage? Or does the compiler-optimization already remove everything that’s not needed?

And if I use the same framework pretty much in every class I use, is it recommended to include the framework in the prefix file instead of every single class?

Greetings
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1 Answer

  1. Editorial Team

    There will be a compilation difference, yes: including everything will take longer to compile. But there shouldn’t be a run-time difference.

    Your idea of including the framework in the prefix is a good one for frameworks you’re going to be using throughout. However, there is a catch, which is that if you change something in that framework your entire codebase will have to be recompiled.

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