_.range = function() {
var args = arguments
if (args.length < 2) {
return _.range(args[1], args[0])
}
var start = args[0] || 0
var last = args[1] || 0
var step = args[2]
if (!is.num(step)) {
step = 1
}
var count = last - start
if (0 != step) {
count = count / step
}
var ret = []
var val = start
for (var i = 0; i < count; i++) {
ret.push(val)
val += step
}
return ret
}
is.iod = function(val) {
if (is.num(val) && !is.infinite(val)) {
return true
}
return false
}
is.nan = function(val) {
return !is.num(val)
}