Tutorial by Topics: functions

foreach(f, xs) map(f, xs) filter(f, xs) reduce(f, v0, xs) foldl(f, v0, xs) foldr(f, v0, xs) Functions can be accepted as parameters and can also be produced as return types. Indeed, functions can be created inside the body of other functions. These inner functions are known as closures...

The trigger will be associated with the specified table or view and will execute the specified function function_name when certain events occur. Please use below link for complete overview of: Triggers: https://www.postgresql.org/docs/current/static/sql-createtrigger.html Trigger Functions...

What does 'const member functions' of a class really means. The simple definition seems to be that, a const member function cannot change the object. But what does 'can not change' really means here. It simply means that you cannot do an assignment for class data members. However, you can do othe...

A function defined with the inline specifier is an inline function. An inline function can be multiply defined without violating the One Definition Rule, and can therefore be defined in a header with external linkage. Declaring a function inline hints to the compiler that the function should be inli...

Intrinsic Functions are included in the COBOL standard as a set of functions that return values from a specific algorithm, given zero or more arguments. These intrinsic functions are provided as a facility of the compiler and runtime system. The return items are temporary COBOL fields, and can be c...

translate(float x, float y, float z) rotateX(float angle) rotateY(float angle) rotateZ(float angle) box(float size) box(float w, float h, float d) ParametersDetailsanglethe angle is in radianssizethe dimension of the box to be used for all its dimensionswthe dimension of the box in the ...

You can add starting variables to the function by adding <parameter> to it's label. These starting variables can be accessed with %n where n is the starting variable's number (%1 for the first, %2 for the second. This %n method works for %1 - %9. For parameter 10 - 255, you will need to use ...

If you have to change some things in renderer.js or main.js but you want to do the changes in index.html, you can use the remote function. It lets you access all the electron functions you need! use remote like require("electron"): main.js:    const electron = require("elec...

You use analytic functions to determine values based on groups of values. For example, you can use this type of function to determine running totals, percentages, or the top result within a group. FIRST_VALUE ( scalar_expression ) OVER ( [ partition_by_clause ] order_by_clause [ rows_range_cl...

A user defined function in Progress ABL is a reusable program module. A function must be declared in the "main" procedure. It cannot be declared inside a procedure or inside another function. A function in Progress ABL isn't a "first class citizen" unlike in programming ...

In Postgres, cryptographic functions can be unlocked by using pgcrypto module. CREATE EXTENSION pgcrypto;

Advance functions like map, flatMap, filter, and reduce are used to operate on various collection types like Array and Dictionary. Advance functions typically require little code and can be chained together in order to build up complex logic in a concise way.

Functions are pieces of code that can be executed by other functions of your program. Your program always starts with the main function. See also asynchronous functions. Methods are exactly the same as function, but they act on an object instance.

As you probably know if you came from OOP school, specializing an abstract class and use it is a practice you should keep in mind when writing your code. What if you could define an abstract function and specialize it in order to create different versions of it? Thinks it as a sort of function Inhe...

This section provides an overview of what azure-functions is, and why a developer might want to use it. It should also mention any large subjects within azure-functions, and link out to the related topics. Since the Documentation for azure-functions is new, you may need to create initial versio...