Reagent deq

Reagent deq is an analog of MPMC asyncronuous queue.

Syntax: reagent[`deq]

o)// create reagent deq
o)d1: reagent[`deq];
o)// spawn 3 stealers
o){spawn[{[id] d:reagent[`deq;d1]; react {[x:d] println["Task #%\nrecv: %";id;x]}};x] }'!3;
o)// send 10 items to a reagent
o){d1[x]}'!10;
Task #0
recv: 0
Task #2
recv: 2
Task #1
recv: 1
Task #0
recv: 3
Task #2
recv: 4
Task #1
recv: 5
Task #0
recv: 6
Task #2
recv: 7
Task #1
recv: 8
Task #0
recv: 9
o)