add typetraits.elementType (#14780)

* add typetraits.elementType * add a test for 0-sized seq
2020-06-24 13:31:07 -07:00 · 2020-06-24 13:31:07 -07:00 · 3e5743d6f7
commit 3e5743d6f7
parent 0434aef4cd
3 changed files with 33 additions and 0 deletions
--- a/changelog.md
+++ b/changelog.md
@ -114,6 +114,7 @@
 - Add `os.normalizeExe`, eg: `koch` => `./koch`.
 - `macros.newLit` now preserves named vs unnamed tuples; use `-d:nimHasWorkaround14720` to keep old behavior
 - Add `random.gauss`, that uses the ratio of uniforms method of sampling from a Gaussian distribution.
+- Add `typetraits.elementType` to get element type of an iterable.

 ## Language changes
 - In the newruntime it is now allowed to assign to the discriminator field