Visual Basic

New PDF release: Pro VB 2008 and the .NET 3.5 Platform

By Andrew Troelsen

ISBN-10: 1430202009

ISBN-13: 9781430202004

ISBN-10: 1590598229

ISBN-13: 9781590598221

The aspect of this bankruptcy was once to demystify the rubbish assortment strategy. As you've visible, the rubbish collector will in simple terms run while it really is not able to obtain the mandatory reminiscence from the m- elderly heap (or whilst a given AppDomain unloads from memory). while a rubbish assortment does ensue, you could leisure guaranteed that Microsoft’s assortment set of rules has been optimized via item generations, secondary threads for the aim of item finalization, and a controlled heap devoted to host huge items. This bankruptcy additionally illustrated the right way to programmatically have interaction with the rubbish collector utilizing the procedure. GC category kind. As pointed out, the one time for those who will actually need to take action is if you are development finalizable or disposable category varieties. bear in mind that finalizable kinds are periods that experience overridden the digital method. item. Finalize() technique to freshen up unmanaged assets (at it slow within the future). Disposable items, nevertheless, are periods (or constructions) that enforce the IDisposable interface. utilizing this method, you disclose a public technique to the article consumer that may be referred to as to accomplish inner cleanup ASAP. ultimately, you realized approximately an of- cial “disposal” development that blends either ways. half three complicated VB Programming Constructs bankruptcy nine operating with Interface varieties This bankruptcy builds in your present realizing of object-oriented improvement by way of reading the subject of interface-based programming.

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As you may already know, COM binaries are typically described using an associated type library (which is little more than a binary version of Interface Definition Language [IDL] code). The problems with COM type information are that it is not guaranteed to be present and the fact that IDL code has no way to document the externally referenced servers that are required for the correct operation of the current COM server. NETaware compiler. Finally, in addition to CIL and type metadata, assemblies themselves are also described using metadata, which is officially termed a manifest.

This namespace provides instant access to machineand project-specific information (which greatly reduces the amount of code you need to author manually). • The ability to build generic types and generic members. Using generics, you are able to build very efficient and type-safe code that defines numerous “placeholders” specified at the time you interact with the generic item. • The ability to customize the process of registering, unregistering, or sending events using the Custom keyword. ). • The ability to define a single type across multiple code files using the Partial keyword.

Programmatically speaking, the term runtime can be understood as a collection of external services that are required to execute a given compiled unit of code. dll). Other popular languages also have a corresponding runtime. dll). Java developers are tied to the Java Virtual Machine (JVM) and so forth. NET platform offers yet another runtime system. NETaware. dll (aka the Common Object Runtime Execution Engine). dll is loaded automatically, which in turn loads the required assembly into memory. The runtime engine is responsible for a number of tasks.

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Pro VB 2008 and the .NET 3.5 Platform by Andrew Troelsen

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