yield

Operator

  yield — emit values from expressions

Synopsis

[yield] <expr> [, <expr>...]

Description

The yield operator produces output values by evaluating one or more expressions on each input value and sending each result to the output in left-to-right order. Each <expr> may be any valid expression.

The yield keyword is optional since it is an implied operator.

Examples

Hello, world

yield "hello, world"

true

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Yield evaluates each expression for every input value

yield 1,2

null
null
null

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Yield typically operates on its input

yield this*2+1

1
2
3

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Yield is often used to transform records

yield [a,b],[b,a] |> collect(this)

{a:1,b:2}{a:3,b:4}

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