meadowsys / lazy-wrap

lazy-wrap

NOTE: Please use version v0.4.1 or above, as versions below it likely have too relaxed Send and Sync requirements, which can lead to soundness issues.

Smol wrapper around a type with an attached initialisation function. On first access, it'll call the attached function to initialise the value. Implements Deref and DerefMut.

You can create this in a static variable. This would look something like:

static STATIC_STRING: LazyWrap<String> = LazyWrap::new(|| {
   // do whatever
   "hallo!!!".into()
});

I've done my best, but its not tested for soundness when used in multithreaded situations (singlethread is perfectly okay), so use at your own risk. Please do file issues if you find any however, it would be very much appreciated c: