Top "Sum" questions

The 'sum' function which returns the sum of the items in an array.

Finding a sum in nested list using a lambda function

I have a data structure similar to this table = [ ("marley", "5"), ("bob", "99"), ("another name", "3") ] What I would like to do, to …

python lambda functional-programming sum
Sum range of int's in List<int>

I reckon this will be quite trivial but I can't work out how to do it. I have a List&…

c# list sum
Sum / Average an attribute of a list of objects

Lets say I have class C which has attribute a. What is the best way to get the sum of …

python list attributes sum
Get the sum of digits in PHP

How do I find the sum of all the digits in a number in PHP?

php string sum
ignore NA in dplyr row sum

is there an elegant way to handle NA as 0 (na.rm = TRUE) in dplyr? data <- data.frame(a=…

r sum dplyr
Difference between np.dot and np.multiply with np.sum in binary cross-entropy loss calculation

I have tried the following code but didn't find the difference between np.dot and np.multiply with np.sum …

python numpy neural-network sum difference
Number of ways to add up to a sum S with N numbers

Say S = 5 and N = 3 the solutions would look like - <0,0,5> <0,1,4> <0,2,3> <0,3,2> <5,0,0> &…

algorithm sum dynamic-programming
JavaScript SUM and GROUP BY of JSON data

This is my first attempt at doing JavaScript with some JSON data objects and need some advice on the proper …

javascript json group-by sum
How to sum properties of the objects within an array in Ruby

I understand that in order to sum array elements in Ruby one can use the inject method, i.e. array = [1,2,3,4,5]; …

ruby arrays object sum inject
Running total by grouped records in table

I have a table like this (Oracle, 10) Account Bookdate Amount 1 20080101 100 1 20080102 101 2 20080102 200 1 20080103 -200 ... What I need is new table grouped by Account …

sql oracle grouping sum cumulative-sum