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doc: add that `or` blocks may end with default values

pull/5814/head
Delyan Angelov 2020-07-12 19:46:33 +03:00
parent f61a7bf3df
commit 87a0765ce4
1 changed files with 8 additions and 2 deletions
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10
doc/docs.md
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@ -1373,8 +1373,14 @@ fn (r Repo) find_user_by_id(id int) ?User {
fn main() { fn main() {
repo := new_repo() repo := new_repo()
user := repo.find_user_by_id(10) or { // Option types must be handled by `or` blocks user := repo.find_user_by_id(10) or {
return // `or` block must end with `return`, `break`, or `continue` // Option types must be handled by `or` blocks.
// Any `or` block, *must* end with one of:
// a) `break`, `continue` or `return` .
// b) a panic("message") or exit(code) call .
// c) a default value of the same type as the Option .
// (i.e. if the function returns for example ?int, you may put 1234 as default value)
return
} }
println(user.id) // "10" println(user.id) // "10"
println(user.name) // "Charles" println(user.name) // "Charles"