3 ms·

would you mind to state some of the so many ways of summing up all the numbers in a list of strings for python? And give a counter example for lua?

• plorkyeran 13y ago
  Off the top of my head: list = ["1", "2", "3"] sum1 = sum(int(num) for num in list) sum2 = reduce(map(list, int), operator.add) sum3 = 0 for num in list: sum3 += int(num) Lua only has the third of these three options. I don't really consider this a particularly compelling advantage as a user.
  • oblique63 13y ago
    No, but I think a lot of python users consider this a particularly compelling advantage as readers. At least, I know I sure spend a lot more time reading code than I do writing code; so I appreciate any language that tries to optimize for that use-case and helps me minimize my cognitive overhead.
  • zeckalpha 13y ago
    The second would work, if the functions were defined correctly.
  • anonymoushn 13y ago
    function curry(f,x) return function(...) return f(x, ...) end end function reduce(f,t,r) r = r or t[1] for i=2,#t do r = f(r,t[i]) end return r end addf = function(a,b) return a+b end sum = curry(reduce, addf) t = {"1", "2", "12"} print(reduce(addf, t)) -- 15 print(sum(t)) -- 15 res = 0 for i=1,#t do res = res + t[i] end print(res) -- 15 res = 0 for k,v in ipairs(t) do res = res + v end print(res) -- 15