Android Complete guide to functions in Kotlin: learn syntax, named parameters, lambdas, extension functions and null handling with practical examples.

JavaScript The JavaScript compiler places the functions of declarative in a global scope to the entire program unlike the expression functions that only corresponds to a definite section of the program.

Flutter I talk about what we should use when developing more complex custom widgets in Flutter.

CSS Transitions are progressive, smooth, and visually appealing state changes; with CSS we can alter the size, spacing, color, borders, opacity, and in short, any property with its assigned value that applies a shape or style to an element. We can also use steps() to control the movement of animations by indicating the number of "frames" or jumps that we want an animation or transition to consist of.

Swift We explain the use of functions in Swift, parameter passing, default values, data return; fundamental to create applications for iOS.