.NET/Java PDF, Tiff, Barcode SDK Library

C:\ > cscript foo.js Microsoft (R) Windows Script Host Version 5.7 Copyright (C) Microsoft Corporation. All rights reserved. Hello world from F#! But how can you obtain a ProgID with dot-notation instead of the ugly plus sign So far, you have used only the basic features of the COM interoperability, but a number of custom attributes can give you finer control over the CCW generation. These attributes are defined in the System.Runtime.InteropServices namespace; and among these classes you ll find the ProgIdAttribute class whose name hints that it is somewhat related to the ProgID. In fact, you can annotate your F# object type using this attribute: open System open System.Runtime.InteropServices [<ProgId("Hwfs.FSComponent")>] type FSCOMComponent = new() as x = {} member x.HelloWorld() = "Hello world from F#!" First unregister the previous component: C:\> regasm hwfs.dll /unregister Microsoft (R) .NET Framework Assembly Registration Utility 2.0.50727.312 Copyright (C) Microsoft Corporation 1998-2004. All rights reserved. Types un-registered successfully C:\> gacutil /u hwfs Microsoft (R) .NET Global Assembly Cache Utility. Version 2.0.50727.42 Copyright (c) Microsoft Corporation. All rights reserved. Assembly: hwfs, Version=0.0.0.0, Culture=neutral, PublicKeyToken=8c1f06f522fc70f8, processorArchitecture=MSIL Uninstalled: hwfs, Version=0.0.0.0, Culture=neutral, PublicKeyToken=8c1f06f522fc70f8, processorArchitecture=MSIL Number of assemblies uninstalled = 1 Number of failures = 0 Now you can update the script as follows and register everything again after recompiling the F# file: o = WScript.CreateObject("Hwfs.FSComponent"); WScript.Echo(o.HelloWorld()); Using other attributes, it is possible to specify the GUIDs to be used and several other aspects that are important in some situations. When a system expects a component implementing a

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Also in the PreRender event trap, you re replacing the first control in the page s control collection with an instance of a new User Control (see Figure 3-17) This example (setting the title of the page) is pretty trivial, but it s there to illustrate that you still have full random access to the entire control tree when this event fires You can do anything to any part of the Page because nothing has been committed to the output stream (see Figure 3-18) Later on we ll show you how you can capture the rendered output and send it somewhere else (like to a file or a database, or as the body of an e-mail) from this trap..

Before running the preceding query, I logged off all users from my database and then logged in using SQL*Plus as the SCOTT and BENCHMARK users in two separate windows. Then I ran the query from a third session as the user SYS. You can run it as any other user as long as the user has been granted the select privilege on the underlying views v_$session and v_$process (v$session and v$process used in the preceding query are database synonyms to the views v_$session and v_$process, respectively). Note that I include a condition that precludes any rows for the user SYS in order to exclude the current SYS session from which I run the query. As you can see, at the time I ran this query, I had two sessions, one each for user, SCOTT, and BENCHMARK.

given COM interface, it is expected that the COM component returns the pointer to the interface with the appropriate GUID; in this case, the ability to explicitly indicate a GUID is essential to defining a .NET interface that should be marshalled as the intended COM interface. Complex COM components can be tricky to wrap using these tools, and official wrappers are maintained by component developers. Microsoft provides the managed version of the Office components, the managed DirectX library, and the Web Browser control to spare programmers from having to build their own wrappers. In conclusion, it is possible to use COM components from F#, and vice versa. You can expose F# libraries as COM components, which allows you to extend existing systems using F#, or use legacy code in F# programs

Also notice the process IDs under the column server_pid for the dedicated Oracle server processes that correspond to each of the connections. In this particular case, the query shows us that there are two sessions using two separate connections. We know that there are two separate connections because the process IDs for each row are different. Now that you understand the difference between a connection and a session in Oracle, let s cover some background information that will help you understand the motivation for connection pooling. We ll then define the terms connection pooling and connection caching.