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Cause

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impl Show for Cause

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Cause::by

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#as_free_fn
#callsite(autofill(loc))
fn[T] Cause::by(err : Error, msg? : String, loc~ : SourceLoc) -> T raise Cause

Chains or wraps an error with an optional message

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Cause::errors

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fn Cause::errors(self : Cause) -> Iter[Cause]

Returns an Iter that walks the error chain

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bail

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#callsite(autofill(loc))
fn[T] bail(msg : String, loc~ : SourceLoc) -> T raise Cause

Just raise an error with a message

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passby

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#callsite(autofill(loc))
fn[T] passby(f : () -> T raise, msg? : String, loc~ : SourceLoc) -> T raise Cause

Call the function and wrap any error it raises

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