how to repeat animation forever in Swift (HUGE_VALF)?

swift cabasicanimation
matt picture matt · Jun 21, 2014 · Viewed 15.4k times · Source

According to the docs, the way to repeat a CABasicAnimation forever is to set its repeatCount to HUGE_VALF.

But in Swift, HUGE_VALF causes a compile error. Swift doesn't seem to know about the standard library (or wherever this constant resides).

What do I do now?

Answer

matt picture matt · Jun 21, 2014

Set the repeatCount to Float.infinity. This compiles and works.

In all probability, HUGE_VALF was a legacy value in any case.

Still, it's a bit of a surprise that these numeric constant names are not seen by Swift. I did try importing <stdlib.h> in the bridging header but it didn't help.

But please see now Martin R's answer. Since the time when I posted my answer, Apple has stated their preferred answer explicitly: use .greatestFiniteMagnitude. It is almost the same thing as .infinity but not quite!

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