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| author | PhilippMDoerner <philippmdoerner@web.de> | 2023-02-26 09:57:51 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-02-26 16:57:51 +0800 |
| commit | 425225119a383511ac6f84ba5c02a691e6c51aea (patch) | |
| tree | 6def2c58565eb6fff9c18787ff3170edaac0e5a3 /changelogs | |
| parent | b2edfe7a02f49f07eb9fcf71cd500215725c217e (diff) | |
| download | Nim-425225119a383511ac6f84ba5c02a691e6c51aea.tar.gz | |
Add mention of breaking change about `[_]` in generics to changelog (#21437)
Add mention of breaking change to changelog As described by #21435 , generic proc declarations making use of `_` as generic parameter are no longer possible. This is a change that was introduced by #21192 . During the debate over if this should be part of the intended spec in #21435 we concluded that it is and thus should be mentioned as a breaking change in the changelogs.
Diffstat (limited to 'changelogs')
| -rw-r--r-- | changelogs/changelog_2_0_0.md | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/changelogs/changelog_2_0_0.md b/changelogs/changelog_2_0_0.md index c8427cc2a..e081865be 100644 --- a/changelogs/changelog_2_0_0.md +++ b/changelogs/changelog_2_0_0.md @@ -149,6 +149,13 @@ proc foo(_, _: int): int = 123 echo foo(1, 2) ``` +- Underscores (`_`) as generic parameters are not supported and cannot be used. + Generics that use `_` as parameters will no longer compile requires you to replace `_` with something else: + + ```nim + proc foo[_](t: typedesc[_]): string = "BAR" # Can not compile + proc foo[T](t: typedesc[T]): string = "BAR" # Can compile + ``` - - Added the `--legacy:verboseTypeMismatch` switch to get legacy type mismatch error messages. |