Skip to content

Add example to unwrap DU in function parameter #8576

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Nov 22, 2018
Merged

Add example to unwrap DU in function parameter #8576

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 10 additions & 2 deletions docs/fsharp/language-reference/discriminated-unions.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -89,10 +89,18 @@ The following example demonstrates this:
```fsharp
type ShaderProgram = | ShaderProgram of id:int

let someMethodUsingShaderProgram shaderProgram =
let someFunctionUsingShaderProgram shaderProgram =
let (ShaderProgram id) = shaderProgram
// Use the unwrapped value
..
...
```

Pattern matching is also allowed directly in function parameters, so you can unwrap a single case there:

```fsharp
let someFunctionUsingShaderProgram (ShaderProgram id) =
// Use the unwrapped value
...
```

## Struct Discriminated Unions
Expand Down