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Add a macro returning enum items count (#15824)

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Add a macro `enumLen` which is used to determine the number of items in
an enumeration type to the `typetraits.nim` module. Also, add unit tests
for it in the `ttypetraits.nim` module.

Related to nimlang/Nim#15824
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Ivan Bobev 2020-11-09 11:02:01 +02:00 • committed by GitHub
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@ -6,6 +6,8 @@
- Make `{.requiresInit.}` pragma to work for `distinct` types.
- Added a macros `enumLen` for returning the number of items in an enum to the `typetraits.nim` module.
- `prelude` now works with the JavaScript target.
- Added `ioutils` module containing `duplicate` and `duplicateTo` to duplicate `FileHandle` using C function `dup` and `dup2`.