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Clarify postfix notation usage for seq in F# style guide #44226

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BillWagner merged 1 commit into from
Jan 13, 2025
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Clarify postfix notation usage for seq in F# style guide #44226

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3 changes: 2 additions & 1 deletion docs/fsharp/style-guide/formatting.md
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Expand Up @@ -2103,13 +2103,14 @@ This section discusses formatting types and type annotations. This includes form

F# allows both postfix style of writing generic types (for example, `int list`) and the prefix style (for example, `list<int>`).
Postfix style can only be used with a single type argument.
Always prefer the .NET style, except for five specific types:
Always prefer the .NET style, except for six specific types:

1. For F# Lists, use the postfix form: `int list` rather than `list<int>`.
2. For F# Options, use the postfix form: `int option` rather than `option<int>`.
3. For F# Value Options, use the postfix form: `int voption` rather than `voption<int>`.
4. For F# arrays, use the postfix form: `int array` rather than `array<int>` or `int[]`.
5. For Reference Cells, use `int ref` rather than `ref<int>` or `Ref<int>`.
6. For F# Sequences, use the postfix form: `int seq` rather than `seq<int>`.

For all other types, use the prefix form.

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