switch Option to external iterators #7055
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bors
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Jun 11, 2013
This was a lot more painful than just changing `x.each` to `x.iter().advance` . I ran into my old friend #5898 and had to add underscores to some method names as a temporary workaround. The borrow checker also had other ideas because rvalues aren't handled very well yet so temporary variables had to be added. However, storing the temporary in a variable led to dynamic `@mut` failures, so those had to be wrapped in blocks except where the scope ends immediately. Anyway, the ugliness will be fixed as the compiler issues are fixed and this change will amount to `for x.each |x|` becoming `for x.iter |x|` and making all the iterator adaptors available. I dropped the run-pass tests for `old_iter` because there's not much point in fixing a module that's on the way out in the next week or so.
flip1995
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May 6, 2021
Fix unused_unit macro false positive changelog: Fix [`unused_unit`] false positive with macros Fixes rust-lang#7055
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This was a lot more painful than just changing
x.eachtox.iter().advance. I ran into my old friend #5898 and had to add underscores to some method names as a temporary workaround.The borrow checker also had other ideas because rvalues aren't handled very well yet so temporary variables had to be added. However, storing the temporary in a variable led to dynamic
@mutfailures, so those had to be wrapped in blocks except where the scope ends immediately.Anyway, the ugliness will be fixed as the compiler issues are fixed and this change will amount to
for x.each |x|becomingfor x.iter |x|and making all the iterator adaptors available.I dropped the run-pass tests for
old_iterbecause there's not much point in fixing a module that's on the way out in the next week or so.