intersection, union, difference, others

[phenix2017]

Creating swarm with these functions, there are data type errors.

[beltrame]

Can you please post the offending code and your expected result?

[vivek-shankar]

Set operations within the swarm construct terminate with "type mismatch: expected table, got integer". I am attaching a minimalistic script that leads to a crash and the error message. Buzz Script:

# Executed at init time
function init() {
  a = swarm.create(2)
  b = swarm.create(3)
  a.select(id%2==0)
  b.join()
 }
# Executed every time step
function step() {
 a.exec(function() { log("[",id,"]","Swarm a") })
 b.exec(function() { log("[",id,"]","Swarm b") })
 i = swarm.intersection(100, a, b)
}
# Executed once when the robot (or the simulator) is reset.
function reset() {
}
# Execute at exit
function destroy() {
}

Error message:

[ROBOT 0] ../../build/testing/swarm_test.bo: execution terminated abnormally: /home/vivek/custom_software/buzz/Buzz/build/testing/swarm_test.bzz:14:33: type mismatch: expected table, got integer

============================================================
state: error    error: 6
code size: 428  oldpc: 354  pc: 354
stacks: 2   cur: 1
cur instr: gstore
next instr: gstore
    3   [table] 7 elements
            [string] 93:'others' -> [c-closure] 93
            [string] 94:'leave' -> [c-closure] 95
            [string] 95:'in' -> [c-closure] 96
            [string] 5:'select' -> [c-closure] 97
            [string] 6:'id' -> [int] 100
            [string] 7:'join' -> [c-closure] 94
            [string] 9:'exec' -> [c-closure] 98

    2   [string] 15:'i'
    1   [nil]
    0   [nil]
============================================================

============================================================
state: error    error: 6
code size: 428  oldpc: 354  pc: 354
stacks: 2   cur: 2
cur instr: gstore
next instr: gstore
    0   [int] 147
============================================================

[phenix2017]

Thanks, Vivek for posting the code.