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| author | Jake Leahy <jake@leahy.dev> | 2023-06-10 22:43:32 +1000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-06-10 14:43:32 +0200 |
| commit | d3af0882cff6d1d4cbaf669005f6463d72e5be27 (patch) | |
| tree | 426ea87725d1d96a9713b7a707875ce06c27a4d7 | |
| parent | b2d77619757c73a8b14a8ccf127eaf3e630159cf (diff) | |
| download | Nim-d3af0882cff6d1d4cbaf669005f6463d72e5be27.tar.gz | |
`BackwardsIndex` overload for `CacheSeq.[]` (#22043)
* Add `BackwardsIndex` support for `CacheSeq` * Add changelog entry --------- Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
| -rw-r--r-- | changelogs/changelog_2_0_0.md | 1 | ||||
| -rw-r--r-- | lib/core/macrocache.nim | 13 |
2 files changed, 14 insertions, 0 deletions
diff --git a/changelogs/changelog_2_0_0.md b/changelogs/changelog_2_0_0.md index e8dbbc27c..42c25946a 100644 --- a/changelogs/changelog_2_0_0.md +++ b/changelogs/changelog_2_0_0.md @@ -335,6 +335,7 @@ + Added bindings to [`Array.shift`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/shift) and [`queueMicrotask`](https://developer.mozilla.org/en-US/docs/Web/API/queueMicrotask). + Added `toDateString`, `toISOString`, `toJSON`, `toTimeString`, `toUTCString` converters for `DateTime`. +- Added `BackwardsIndex` overload for `CacheSeq`. - Added support for nested `with` blocks in `std/with`. diff --git a/lib/core/macrocache.nim b/lib/core/macrocache.nim index ffd07abb1..39999fa11 100644 --- a/lib/core/macrocache.nim +++ b/lib/core/macrocache.nim @@ -127,6 +127,19 @@ proc `[]`*(s: CacheSeq; i: int): NimNode {.magic: "NcsAt".} = mySeq.add(newLit(42)) assert mySeq[0].intVal == 42 +proc `[]`*(s: CacheSeq; i: BackwardsIndex): NimNode = + ## Returns the `i`th last value from `s`. + runnableExamples: + import std/macros + + const mySeq = CacheSeq"backTest" + static: + mySeq &= newLit(42) + mySeq &= newLit(7) + assert mySeq[^1].intVal == 7 # Last item + assert mySeq[^2].intVal == 42 # Second last item + s[s.len - int(i)] + iterator items*(s: CacheSeq): NimNode = ## Iterates over each item in `s`. runnableExamples: |