Computer tips

In its role as a high level assembler used for writing operating systems, C is often used to access memory locations and change individual bits. You might for example need to access individual bits in an int. It can sometimes be useful to conserve memory by using a byte to hold 8 flags though with an abundance of ram it's common to just use one byte per flag or even one per int. Knowing how to extract or alter individual bits is still worthwhile knowing; you may never have to use it but when you have to maintain code that...

49p gaconht 04-06-2011 74 9   Download

‘java.sql’ and ‘javax.sql’ package SQL Interfaces for application JDBC Driver Manager manage two or more JDBC drivers ‘DriverManager’ class in the java.sql package. JDBC Driver API defined for connecting between the JDBC driver manager and JDBC drivers JDBC Driver access each database 4 types : JDBCODBC bridge Native API partly – Java technologybased driver Netprotocol all Java technologybased driver

38p nguyenvanhabk1 04-09-2012 109 11   Download

provide request information for HTTP servlets. The servlet container creates an HttpServletRequest object and passes it as an argument to the servlet's service methods (doGet, doPost, etc).Client request information including : parameter name and values, and an input stream Attributes : custom information about a request. Extends the ServletRequest interface Returns the value of attribute : public Object getAttribute(String name)

36p nguyenvanhabk1 04-09-2012 105 7   Download

Language Lap trinh JAVA Java is the language programming direction objects (as C + +) do Sun Microsystem output to the first hex niên 90 the ky 20. Program Việt using Java can be running on any hệ system that have installed your virtual Java (JVM - Java Virtual Machine). Máy virtual Java (JVM - Java Virtual Machine): One programs write by Java will be compile ra mã of the virtual Java (mã java bytecode)

53p nguyenvanhabk1 04-09-2012 83 6   Download

• Microsoft’s latest database object model • Allows VB programmers to use a standard set of objects to refer to data from any source • .NET approach uses disconnected datasets with common data representation (data types) from multiple sources Visual

15p rose_12 04-12-2012 41 3   Download