24 lines
742 B
Nim
24 lines
742 B
Nim
#[
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autogenerated by docgen
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loc: /home/runner/work/Nim/Nim/lib/js/asyncjs.nim(249, 21)
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rdoccmd: -r:off
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]#
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import "/home/runner/work/Nim/Nim/lib/js/asyncjs.nim"
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{.line: ("/home/runner/work/Nim/Nim/lib/js/asyncjs.nim", 249, 21).}:
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from std/sugar import `=>`
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from std/strutils import contains
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proc fn(n: int): Future[int] {.async.} =
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if n >= 7: raise newException(ValueError, "foobar: " & $n)
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else: result = n * 2
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proc main() {.async.} =
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var reason: Error
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await fn(6).catch((r: Error) => (reason = r)) # note: `()` are needed, `=> reason = r` would not work
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assert reason == nil
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await fn(7).catch((r: Error) => (reason = r))
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assert reason != nil
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assert "foobar: 7" in $reason.message
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discard main()
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