code: function isArrayLike (a) {
    if ('object' != typeof a)
      return false
    else if (null == a)
      return false
    else
      return Boolean( Array.isArray(a)
                      || null != a.length
                      || a[0] )
  }
docs: Detects if input is "like" an array.
  
  @private
  @param {Mixed} a
  @return {Boolean}