Simple find_index function to find items in list of maps

findindex.src

// USAGE: 
// import_code("path/to/findindex.src")
// list = [item, item, item]
// somefunction = function (item, value)
//   return item.something == value
// end function
// 
// index = find_index(list, value, @somefunction) 

find_index = function (list, value, fn)
	index = 0
	for item in list
		if fn(item, value) then return index
		index = index + 1		
	end for
end function