Rush

The rush expression is used to run a block of two or more async expressions concurrently (simultaneously).

The rush expression is used to run a block of two or more async expressions concurrently (simultaneously).

When the fastest subexpression completes, any expression that follows the rush is evaluated, and any remaining subexpressions continue to evaluate.

|  | set WinnerResult = rush: |
| --- | --- |
|  | # All three async functions start at the same time |
|  | AsyncFunctionLongTime() |
|  | AsyncFunctionShortTime()  # This will win and its result is used |
|  | AsyncFunctionMediumTime() |
|  | # Next expression is called after the fastest async function (AsyncFunctionShortTime()) completes. |
|  | # All other subexpression tasks (AsyncFunctionLongTime(), AsyncFunctionMediumTime()) continue. |
|  | NextExpression(WinnerResult) |
|  | AsyncFunction4() |
|  | # If any rush subexpression tasks are still running when AsyncFunction4 completes |
|  | # then they are now canceled. |