sorts

When you write an MFC program some time ago, you need to sort a string collection CStringArray. The Standard Template Library STL provides a function template sort that is powerful but has two inconveniences: 1. Sort uses the enumerator (iterator)

The original knowledge of the index only knows that the index can be based on one or more columns, the B-tree index does not contain NULL, but in some cases we need to find some data through the where column name is NULL, when the database uses the

Ios,android,windowsphone is now the mainstream of mobile internet three platform, I have been involved in the design of these three platforms. In the process of design, because of these three different characteristics of the platform, often need to

First, Introduction For data processing, sorting is one of the most basic operations. In today's computer systems, the time spent on sorting accounts for a large proportion of the system's CPU running time. Data indicate that on some commercial

function | The error of index using index three: a function based index Using a function based index (BFI, Based function Index): Starting with Oracle 8i, you can use a function based index to improve query performance. Using a function based

Algorithm The polymorphic algorithm (polymorphic algorithms) described in this section is a reusable, functional fragment provided by the JDK. They are all taken from the collections class and all take the form of a static method (its first