In programming, a promise represents an object that will eventually complete with a single result, either successfully with a resolved value or with an explanation for why it couldn't be fulfilled ...

An example of a function in a program is a sum function. Here’s a simple implementation: define a function named sum that takes two arguments. Call it using variables a and b: int a = 5; int b ...

Developers use application programming interfaces to hide complexity, organize code, design reusable components, and connect different systems, applications, or services. The term API stands for ...

Is there an explanation for this? See the original question here. It’s math. Telastyn answers (37 votes): Because functions are mathematical constructs which perform a calculation and return a ...