For an inline function one could create a constraint like: let inline implicit arg = ( ^a : (static member op_Implicit : ^b -> ^a) arg)
Given the following contrived active pattern: let (|TypeDef|_|) (typeDef:Type) (value:obj) = if obj.ReferenceEquals(value, null) then 开发者_StackOverflow社区None
I defined the active pattern \"Expression\" as follows: let (|Expression|_|) expression _ = Some(expression)
We\'re all used to pattern-matching for cases when something is a particular type, e.g., match x with Y(x) :: tail -> ... // assumes List.head(x) is of type Y(x)
I have a records of types type tradeLeg = { id : int ; tradeId : int ; legActivity : LegActivityType ; actedOn : DateTime ;
I get the following error in diff with a red squiggle under Subset. Type mismatch. Expecting a Range -> Choice but given a Range * Range -> Choice
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