Release 0.18.0 · roc-lang/basic-cli

Roc syntax to use this platform:

app [main!] { pf: platform "https://github.com/roc-lang/basic-cli/releases/download/0.18.0/0APbwVN1_p1mJ96tXjaoiUCr8NBGamr8G8Ac_DrXR-o.tar.br" }

Breaking changes

Rename all functions to snake_case #288
Upgrade to purity inference #257
Add new custom type Arg, update API to main! : List Arg => Result {} [Exit I32 Str]_ #293

Full Changelog: 0.17.0...0.18.0

! is now part of the function name of effectful functions (= all platform functions), it is no longer syntax sugar for Task.await. Change:
- app [main] { to app [main!] {
- main = to main! = \_args ->
All basic-cli functions have changed to snake_case naming.
Task is no longer needed, you can switch to using Result, => is used in the type of a function if it is effectful. Change:
- Task.ok to Ok
- Task.err to Err
- Task to Result
- Task.loop to a recursive function
- You may need to add Ok {} as the last line in the main function
- Example with => :
```
rocVersionCheck : Task {} _
rocVersionCheck =
```
To:
```
rocVersionCheck! : {} => Result {} _
rocVersionCheck! = \{} ->
```
We recommend the use of the try keyword:
- replace Stdout.line! "hello" with try Stdout.line! "hello"
- use it instead of Task.await
HTTP changes:
- in headers: key to name
- url to uri
- mimeType is gone
- timeout to timeout_ms

Feel free to suggest additions to the migration guide!