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| author | metagn <metagngn@gmail.com> | 2022-09-20 15:58:22 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-09-20 14:58:22 +0200 |
| commit | 3dc302662e2665a0c1467a290c689f40d8a2e263 (patch) | |
| tree | 7a7eeb52ee97c3e8ee2f251bf4f4b05ad95000a2 | |
| parent | 08c02f0236eec5957d54cc7f263461e06cb09a2a (diff) | |
| download | Nim-3dc302662e2665a0c1467a290c689f40d8a2e263.tar.gz | |
clarify distinct pointer type `nil` change (#20376)
* clarify distinct pointer type `nil` change * Update changelog.md [skip ci] Co-authored-by: Clay Sweetser <Varriount@users.noreply.github.com> * remove extra quote [skip ci] Co-authored-by: Clay Sweetser <Varriount@users.noreply.github.com>
| -rw-r--r-- | changelog.md | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/changelog.md b/changelog.md index 9364ab573..3281f6526 100644 --- a/changelog.md +++ b/changelog.md @@ -29,7 +29,15 @@ - `nimPreviewDotLikeOps` is going to be removed or deprecated. - The `{.this.}` pragma, deprecated since 0.19, has been removed. -- `nil` is no longer a valid value for distinct pointer types. +- `nil` literals can no longer be directly assigned to variables or fields of `distinct` pointer types. They must be converted instead. + ```nim + type Foo = distinct ptr int + + # Before: + var x: Foo = nil + # After: + var x: Foo = Foo(nil) + ``` - Removed two type pragma syntaxes deprecated since 0.20, namely `type Foo = object {.final.}`, and `type Foo {.final.} [T] = object`. |