Abstract: Sparse arrays designed based on fourth-order difference co-array (DCA) can achieve significantly higher uniform degrees-of-freedom (uDOFs). However, most existing fourth-order sparse arrays ...

Many times we need to calculate sum or product of values stored in an array. The most common way is to calculate sum or product by using for or foreach loop. For example we have an array with some ...

array_average(array(double)) → double# Returns the average of all non-null elements of the array. If there is no non-null elements, returns null. array_sum(array(T)) → bigint/double# Returns the sum ...

JavaScript’s reduce is one of the most useful array methods that should be in a developer’s arsenal. Introduced in ES5, it’s somewhat similar to for…each and map methods that are used with arrays, but ...