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kw respond

Reserved keyword

The list of words: §1.4

Syntax

ebnf
PStep       = ( "respond" Expr | Expr ) [ "on" Ident ] [ "durable" | "best_effort" ] ;
ebnf
Primary     = Literal | Path | "it" | "self" | "(" Expr { "," Expr } ")" | ListLit | MapLit
            | StructLit | Lambda | Block | If | Match | For | While | Loop | Scope | Select | Query
            | "spawn" ( Postfix | Block ) | "await" Unary | "atomic" [ "(" Args ")" ] Block
            | "return" [ Expr ] | "fail" Expr | "yield" Expr | "respond" Expr | "break" [ Label ] [ Expr ]
            | "continue" [ Label ] | "emit" Path "(" Expr ")" | "unsafe" Block | "blocking" Block
            | "comptime" Block | "." Ident [ "(" [ Args ] ")" ] ;

Grammar: App. A

Defined in

  • 10.6 Pipelines — A pipeline is a linear chain of steps, each of which runs on its own node; data is passed from node to node directly, the caller receives on
  • 5.8 Other expressions — defer e — executes e on leaving the block (including on fail, return, cancellation), in the reverse order of declaration.
  • 1.4 Keywords — Reserved (cannot be used as names)

Examples

oxl
pipeline uploadPhoto(img: Image) -> PhotoId {
  validate
  -> Store.put(it)              on storage
  -> respond it.id
  -> resize(it, THUMB_SIZES)    on gpu
  -> moderate                   on ml  durable
  -> SearchIndex.add(it)
} on_error(e, step) { Dlq.push(e, step) }

— 10.6 Pipelines

Related diagnostics

pipeline-idempotency, respond-twice, respond-type, unknown-role

See also