# Io Reference

Core / Core / Call

|  | Call stores slots related to activation.

activated

Returns the activated value.
argAt(argNumber)

Returns the message's argNumber arg. Shorthand for same as call message argAt(argNumber).
argCount

Returns the number of arguments for the call. Shortcut for "call message argCount".
coroutine

Returns the coroutine in which the message was sent.
delegateTo(target, altSender)

Sends the call's message to target (and relays it's stop status). The sender is set to altSender, if it is supplied. Returns the result of the message.
delegateToMethod(target, methodName)

Sends the call's message to target via the method specified by methodName. Returns the result of the message.
description

Returns a description of the receiver as a String.
evalArgAt(argNumber)

Evaluates the specified argument of the Call's message in the context of it's sender.
evalArgs

Returns a list containing the call message arguments evaluated in the context of the sender.
hasArgs

Returns true if the call was passed arguments.
message

Returns the message value.
relayStopStatus(arg)

Sets sender's stop status (Normal, Return, Break, Continue etc.) and returns evaluated argument.
resetStopStatus(arg)

Sets stop status to Normal. See also `Call setStopStatus`.
sender

Returns the sender value.
setStopStatus(aStatusObject)

Sets the stop status on the call.
slotContext

Returns the slotContext value.
stopStatus

Returns the stop status on the call. (description of stopStatus will be added once we decide whether or not to keep it)
target

Returns the target value.