pop
Removes the first item from this deque and returns it.
Example
val deque = dequeOf(1)
assert(deque.popFirstOrThrow { RuntimeException() } == 1)
deque.popFirstOrThrow { RuntimeException() } // Exception!Content copied to clipboard
Return
The value that was previously the first item in this deque.
Parameters
fn
Function that will be used to retrieve the exception to throw when this deque is empty.
This function will not be called if this deque is not empty.
Throws
If this deque is empty.