strange behavior in lib-controller.coffee

[Icesory]

I develop a new protocol for the Quigg switches. To verify this i wrote a normal test in the lib.

But it looks like the test don´t call the decodePulses function on an normal way. For this protocol we need to erase the first pulse. My first try was to set the first pulse to 2. A two is mapped to nothing.

  pulsesToBinaryMapping = {
    '10': '1' #binary 1
    '01': '0' #binary 0
    '2' : ''  #footer
  }
    decodePulses: (pulses) ->
      pulses[0] = 2
      binary = helper.map(pulses, pulsesToBinaryMapping)

but this fails in the test. For me is this really strange. The first pulse isn´t set to two.

I have found this solution

    decodePulses: (pulses) ->
      binary = helper.map(pulses[1..], pulsesToBinaryMapping)

@sweetpi do i have a error in reasoning?

[sweetpi]

I think you've to use: pulses[0] = '2' because the check

if data.substr(i, search.length) is search

inside the map function is only true if search and the substring have the same types.

But the second method looks less like cheating ;)

[Icesory]

Oh damit. Clearly the two must be a Char. Coding at 3:00am isn't a good idea.

But it is interesting that the Char 0 in the array was not changed and no failure was dropped.