sum(A, dims)
sum(A, dims)
Sum elements of an array over the given dimensions.
Examples
-
Sum of an array:
julia> arr = [1, 2, 3, 4, 5]; julia> sum(arr) 15This example calculates the sum of all elements in the array
arr. -
Sum of a range of numbers:
julia> sum(1:100) 5050It computes the sum of all numbers from 1 to 100 using a range.
- Sum of a matrix:
julia> matrix = [1 2 3; 4 5 6; 7 8 9]; julia> sum(matrix) 45It calculates the sum of all elements in the matrix.
Common mistake example:
julia> str = "Hello";
julia> sum(str)
ERROR: MethodError: no method matching sum(::String)In this example, the sum function is called on a string (str). However, sum expects a collection of numbers, so it throws a MethodError. Make sure to provide a collection of numbers to the sum function for correct results.
See Also
Array, broadcast, cat, combinations, conj!, digits!, fieldnames, fill, fill!, last, length, maximum, minimum, ones, parent, parentindexes, partitions, permutations, pointer, pointer_to_array, promote_shape, rand!, reshape, scale, similar, sum, sum_kbn, takebuf_array, transpose!, vec, zeros,User Contributed Notes
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