Memory protection
Buffer overrun attacks are among the most common mechanisms, or vectors, for intrusion into computers. In this type of exploit, the attacker sends a long string to an input stream or control – longer than the memory buffer allocated to hold it. The long string injects code into the system, which is executed, launching a virus or worm.
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The vast majority of Chart types offered by Excel should NEVER be used! Our next example shows the graph-types available as pyramid charts. None of these choices shown below represent good graphs! All but the last one display false third dimensions. In addition they all suggest stacked displays that are known to be poor ways to make comparisons.
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Modern object-oriented programming languages like Java or C# support multithreaded programming. They allow several threads to run concurrently sharing objects on the heap in the same address space. Each thread has its own frame stack, program counter, local variables and registers. The languages have special syntactical constructs for synchronization. Java has a synchronized statement and synchronized methods, while C# has a lock statement and several attributes that can be applied to classes and methods to control their run-time synchronization behavior.
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C# 2.0 introduces several language extensions, the most important of which are generics, anonymous methods, iterators, and partial types.
• Generics permit classes, structs, interfaces, delegates, and methods to be parameterized by the types of data they store and manipulate. Generics are useful because they provide stronger compile-time type checking, require fewer explicit conversions between data types, and reduce the need for boxing operations and runtime type checks.
• Anonymous methods allow code blocks to be written “in-line” where delegate values are expected. Anonymous methods are similar to lambda functions in the Lisp pro- gramming language. C# 2.0 supports the creation of “closures” where anonymous methods access surrounding local variables and parameters.
• Iterators are methods that incrementally compute and yield a sequence of values. Itera- tors make it easy for a type to specify how the foreach statement will iterate over its elements.
• Partial types allow classes, structs, and interfaces to be broken into multiple pieces stored in different source files for easier development and maintenance. Additionally, partial types allow separation of machine-generated and user-written parts of types so that it is easier to augment code generated by a tool.
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Use SQL Server 2008’s new and enhanced T-SQL programming features to create next generation database applications that support the most demanding end-user requirements.
New Table-Value Parameters Pass large amounts of data efficiently to functions and procedures using new Table-Value Parameters.
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What You Need to Run MetaStock Pro Two Quick Steps for Getting Up to Speed Fast Installing MetaStock Pro Running MetaStock Pro Getting Help The Workplace Microsoft Windows Standard Features Using the Menus Using Dialogs Using the Toolbars Using the Status Bar HELP! Using MetaStock Pro’s Help System Changing the Appearance of MetaStock Pro’s Workplace Collecting Your Data What is Data? DataOnDemand™ Collecting Local Real-time Data End-of-day Data Collection with The DownLoader Chart Concepts Managing Your Charting Opening, Closing and Saving (General) Special Controls in the New, Open, and Save Dialogs Searching for Securities with the Find Command Deleting Chart and Layout Files Saving Your Work with Charts
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Installing the Data Installing files from the Internet Installing files from the diskette Introducing the interface The data view The variable view The output view The draft view The syntax view What the heck is a crosstab? Creating the data definitions: the variable view Variable types Variable names and labels Missing values Non-numeric numbers, or when is a number not a number? Binary variables Creating a new data set Getting help in creating data sets and defining variables Creating primary reference lists Frequencies
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Ruby 1.8.4 Types Expression Variables Predefined Variables Ruby arguments Reserved Words Operator and Presedence Regex Exceptions Module/Class Constants Object Array File String Hash Dir Kernel Test::Unit DateTime
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