How to give CultureInfo to TryParse method in F?

Use something like: let foo str = match System.Decimal. TryParse(str, NumberStyles. AllowDecimalPoint, CultureInfo.

InvariantCulture) with | (true, result) -> Some result | (false, _) -> None.

Thanks Bas. I didn't notice the NumberStyles in the middle, which caused my compile to fail. – hwaien May 23 at 23:18.

You need to use overload that takes NumberStyles as the second argument and CultureInfo as the third. Since this is a . NET method, the arguments are tupled (except that F# compiler turns the last byref argument into a return typle): let foo str = match Decimal.

TryParse(str, NumberStyles. None, CultureInfo. InvariantCulture) with | (true, result) -> Some result | (false, _) -> None The type signature of the method (as shown in Visual Studio tool tip) is: Decimal.

TryParse(s:string, style:NumberStyles, provider:IFormatProvider, result:byref) : bool When using the method with pattern matching, the compiler turns all byref arguments from the end of the argument list into (last) elements of the returned tuple, but it keeps the parameters as a tuple, so you have to call the method using the TryParse(foo, bar) notation.

Use another overload of TryParse method open System open System. Globalization let parse s = match Decimal. TryParse(s, NumberStyles.

Number, CultureInfo. InvariantCulture) with | true, v -> Some v | false, _ -> None.

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