Background and motivation

There is currently formats related to DateTime:

"yyyy-MM-ddTHH:mm:ss.fffZ"; "yyyy-MM-ddTHH:mm:ssZ"

and DateTimeOffset:

"yyyy-MM-ddTHH:mm:ss.fffK"; "yyyy-MM-ddTHH:mm:ssK"

These look related to ISO 8601. See the roundtrip format in:

https://learn.microsoft.com/en-us/dotnet/standard/base-types/standard-date-and-time-format-strings

And the page on the standard on wikipedia:
https://en.wikipedia.org/wiki/ISO_8601

API Proposal

Modules in the Extensions.InvariantCulture namespace named DateTime and DateTimeOffset with related functions. Move the implementation of TryParse and Parse of DateTime and DateTimeOffset to these modules.

namespaceFSharpPlus.Extensions.InvariantCulture[<RequireQualifiedAccess>]moduleDateTime=lettryParse(x:string)=match DateTime.TryParseExact(x,[|"yyyy-MM-ddTHH:mm:ss.fffZ";"yyyy-MM-ddTHH:mm:ssZ"|],null, DateTimeStyles.RoundtripKind)with|true, x-> Some x|_->match DateTime.TryParse(x, CultureInfo.InvariantCulture, DateTimeStyles.AdjustToUniversal)with|true, x-> Some x|_-> None

API Usage

openFSharpPlus.Extensionsletparsed= InvariantCulture.DateTime.tryParse stringFromTheInternet

Alternative Designs

No response

Risks

Probably little risk

Are you willing to help with a proof-of-concept (as PR in that or a separate repo) first and as pull-request later on?

Yes, please assign this issue to me.