olap functions

Pillow Book Always with a heart of awe. callback functions and anonymous functions in PHP Objective A long time ago in the company to become a dog, every day from work home feel a heavy head. Saturday Sunday also a variety of things, do not want to do code word, blog also dragged down, feeling that the recent period of time will not be too busy, start to write a write, summarize share the harvest, welcome

PL/SQL single-line functions and group functionsA function is a program that has 0 or more parameters and has a return value. Oracle has built a series of functions in SQL, which can be called SQL or PL/SQL statements, and functions are divided into two main categories:Single-line functionGroup functionsThis article discusses how to take advantage of single-line

1. Global functions and class member function conversionsMutual transformation of global functions and member functions: you only need to modify a pointer to this class .#include 2. Friend $2.1 friend function#include "iostream" using namespace Std;class test2{public: //friend function is characterized by a friend class pointer or a reference friend int Opm

What is a function? 　　Excel functions are predefined, and perform calculations, analyses, and other special formulas for processing data tasks . Take the commonly used SUM function sum as an example, its syntax is "SUM (Number1,number2,......)". where "SUM" is called a function name, a function has only one name, which determines the function and purpose of the function. The function name is followed by an opening parenthesis, followed by a comma-sep

Windows API often requires callback functions, and in the C + + development of object-oriented when the way, if you can make C + + class member functions become callback function, is simply great goodness! But C + + member functions implicitly imply that a this pointer is used to point to the current object. It's really not easy to implement callbacks. I've been

This article is mainly on the JS window.onload loaded with multiple functions and append functions are introduced, the need for friends can come to the reference, I hope to help you. Usually do projects often need to use window.onload, nbsp; usage is as follows: nbsp; function func () {alert ("This is window onload event!"); return;} nbsp; nbsp; Window.onload=func; nbsp; or below:nbsp; nbsp; window.onload

This section studies the execution flow of C + + non-static member functions and virtual functions through disassembly;The code snippet is as followsClass Animal{public: virtual void print () { cout The output is as follows:[Email protected]:~/desktop$./testdog::p rint 1Animal::p rint2 _age address:0xbfc5c7f8 value:1virtual Fun ADDRESS:0XBFC 5c7f4virtual fun[1] address:0x8048c30virtual fun[2] Address:0

In OOP programming languages, polymorphism is an important OOP idea. But the multi-state syntax support is inseparable from the virtual function. Each time to put what virtual function, abstract class confused, this time to tidy up!--------------------------------------------------------------------------------------------------------------- ------------------------------------------------------------------------------In Java, there is no concept of virtual function, the default function is virt