String format function

[Shovinus]

Issue type:

• :heavy_plus_sign: Feature request

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Short description:

Allow the building of string with placeholders and variables: "Hello {0}, you have {1} new messages." Then pass in variables. If it could accept multiple variable cards that would be nice.

[rubensworks]

Should be trivial to implement with a fixed number of variables, but a bit more tricky with a variable number of variables (but a list could work here).

[Shovinus]

no more than 10 would normally needed but even then you can just concat more.

[Flithor]

If considered to make a .NET style string format operator here is the .NET string class and format function https://github.com/microsoft/referencesource/blob/master/mscorlib/system/string.cs#L2960

GitHub

microsoft/referencesource

Source from the Microsoft .NET Reference Source that represent a subset of the .NET Framework - microsoft/referencesource