Modem.isOpen

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Grid Redstone.png  Function modem.isOpen
Checks whether or not a certain channel is open.
Syntax modem.isOpen(number channel)
Returns boolean is channel open?
Part of ComputerCraft
API Modem

Examples

Grid paper.png  Example
Checks whether the computer is listening on channel 5.
Code
local modem = peripheral.wrap("top")

if modem.isOpen(5) then
  print("The computer is listening on channel 5.")
else
  print("The computer is not listening on channel 5.")
end
Output Whether or not channel 5 is open.
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