Get all futures in a container

Gets all futures in an environment, a list, or a list environment and returns an object of the same class (and dimensions). Non-future elements are returned as is.

Usage

futures(x, ...)

Arguments

x

An environment, a list, or a list environment.

...

Not used.

Value

An object of same type as x and with the same names and/or dimensions, if set.

Details

This function is useful for retrieve futures that were created via future assignments (%<-%) and therefore stored as promises. This function turns such promises into standard Future objects.