Other Functions
requireTrue
Returns the specified error if the async-wrapped value is false.
'a -> Async<bool> -> Async<Result<unit, 'a>>`requireFalse
Returns the specified error if the async-wrapped value is true.
'a -> Async<bool> -> Async<Result<unit, 'a>>`requireSome
Converts an async-wrapped Option to a Result, using the given error if None.
'a -> Async<'b option> -> Async<Result<'b, 'a>>`requireNone
Converts an async-wrapped Option to a Result, using the given error if Some.
'a -> Async<'b option> -> Async<Result<unit, 'a>>`requireValueSome
Converts an async-wrapped ValueOption to a Result, using the given error if ValueNone.
'a -> Async<'b voption> -> Async<Result<'b, 'a>>requireValueNone
Converts an async-wrapped ValueOption to a Result, using the given error if ValueSome.
'a -> Async<'b voption> -> Async<Result<unit, 'a>>requireEqual
Returns Ok if the async-wrapped value and the provided value are equal, or the specified error if not. Same as requireEqualTo, but with a parameter order that fits normal function application better than piping.
'a -> Async<'a> -> 'b -> Async<Result<unit, 'b>>requireEqualTo
Returns Ok if the async-wrapped value and the provided value are equal, or the specified error if not. Same as requireEqual, but with a parameter order that fits piping better than normal function application.
'a -> 'b -> Async<'a> -> Async<Result<unit, 'b>>requireEmpty
Returns Ok if the async-wrapped sequence is empty, or the specified error if not.
'a -> Async<'b> -> Async<Result<unit, 'a>>requireNotEmpty
Returns Ok if the async-wrapped sequence is non-empty, or the specified error if not.
'a -> Async<'b> -> Async<Result<unit, 'a>>requireHead
Returns the first item of the sequence if it exists, or the specified error if the sequence is empty
'a -> Async<'b> -> Async<Result<'c, 'a>>require
Returns the provided async-wrapped result if it is Ok and the predicate is true, or if the async-wrapped result is Error. If the predicate is false, returns a new async-wrapped Error result with the error value.
('a -> bool) -> 'b -> Async<Result<'a,'b>> -> Async<Result<'a,'b>>setError
Replaces an error value of an async-wrapped result with a custom error value
'a -> Async<Result<'b, 'c>> -> Async<Result<'b, 'a>>withError
Replaces a unit error value of an async-wrapped result with a custom error value. Safer than setError since you're not losing any information.
'a -> Async<Result<'b, unit> -> Async<Result<'b, 'a>>defaultValue
Extracts the contained value of an async-wrapped result if Ok, otherwise uses the provided value.
'a -> Async<Result<'a, 'b>> -> Async<'a>defaultWith
Extracts the contained value of an async-wrapped result if Ok, otherwise evaluates the given function and uses the result.
(unit -> 'a) -> Async<Result<'a, 'b>> -> Async<'a>ignoreError
Same as defaultValue for a result where the Ok value is unit. The name describes better what is actually happening in this case.
Async<Result<unit, 'a>> -> Async<unit>tee
If the async-wrapped result is Ok, executes the function on the Ok value. Passes through the input value unchanged.
('a -> unit) -> Async<Result<'a, 'b>> -> Async<Result<'a, 'b>>teeError
If the async-wrapped result is Error, executes the function on the Error value. Passes through the input value unchanged.
('a -> unit) -> Async<Result<'b, 'a>> -> Async<Result<'b, 'a>>teeIf
If the async-wrapped result is Ok and the predicate returns true for the wrapped value, executes the function on the Ok value. Passes through the input value unchanged.
('a -> bool) -> ('a -> unit) -> Async<Result<'a, 'b>> -> Async<Result<'a, 'b>>teeErrorIf
If the async-wrapped result is Error and the predicate returns true for the wrapped value, executes the function on the Error value. Passes through the input value unchanged.
('a -> bool) -> ('a -> unit) -> Async<Result<'b, 'a>> -> Async<Result<'b, 'a>>Last updated