.net barcode reader component Try it Out: Uri Mapping and the Navigation Framework in visual C#

Encoding barcode pdf417 in visual C# Try it Out: Uri Mapping and the Navigation Framework

Figure 9-4. The Flex application on the page Once you double-click an item you will see Figure 9-5.

You can use Console to review logs quickly without having to open and read each file independently. When you open Console, you are immediately viewing Console Messages. Clicking the Show Log List button gives you a listing of all the logs that Console is aware of, divided into three sections (see Figure 5 1). The Files section is a list of plain text log files, laid out according to where they re located in the file system. Any other log files you open for viewing with Console will appear in this section. The top two sections don t show the contents of text files, but rather information drawn from the Apple System Logger database. ASL is a new logging facility that Apple introduced with Leopard, which consists of syslogd and aslmanager. The de facto standard for logging messages on Unix system is syslogd. It is historically used by the kernel to write messages to the system log, and is also used by daemons and programs such as Apache and Postfix. In Snow Leopard, messages logged by the syslogd server are stored in a binary database, located in /private/var/log/asl/. The files in that directory are managed by aslmanager. For compatibility with the many other systems that use syslogd, many of the messages are elso echoed to /private/var/log/system.log.

<shell:ApplicationBar x:Key="GlobalAppMenuBar" Opacity="1" IsVisible="True" IsMenuEnabled="True"> <shell:ApplicationBar.Buttons> <shell:ApplicationBarIconButton IconUri="/Images/appbar.add.rest.png" Text="add"> </shell:ApplicationBarIconButton> <shell:ApplicationBarIconButton IconUri="/Images/appbar.save.rest.png" Text="save"> </shell:ApplicationBarIconButton> <shell:ApplicationBarIconButton IconUri="/Images/appbar.delete.rest.png" Text="delete"> </shell:ApplicationBarIconButton> </shell:ApplicationBar.Buttons> <shell:ApplicationBar.MenuItems> <shell:ApplicationBarMenuItem Text="Menu Item 1" IsEnabled="True"> </shell:ApplicationBarMenuItem> <shell:ApplicationBarMenuItem Text="Menu Item 2" IsEnabled="True"> </shell:ApplicationBarMenuItem> </shell:ApplicationBar.MenuItems> </shell:ApplicationBar> 3. With the global Application Bar defined, you are ready to add it to the pages within our application. Open MainPage.xaml and add the following attribute within the <phone:PhoneApplicationPage> node:

bless NetBoot server bsdp://192.168.210.99

The first thing you see in the sample is the use of open to access functionality from the namespace System.Windows.Forms: open System.Windows.Forms 7 discusses namespaces in more detail. The earlier declaration means you can access any content under this path without quoting the long path. If it didn t use open, you d have to write the following, which is obviously a little verbose: let form = new System.Windows.Forms.Form(Visible=true,TopMost=true, Text="Welcome to F#") You can also use open to access the contents of an F# module without using long paths. 7 discusses modules in more detail.

Now that you have a list of links in the same category as the article in this example, you can see how it all fits together. In the new sidebar code, you first need to find the category of the current article. A standard template tag helps you with that: get_the_category returns a list of the category IDs for the current post. Save the first category ID in a variable, $cat. For this

When all of the setup is done, you create the Flex application code that uses XML-RPC to communicate with the server you created a short while back. The server exposes the two string manipulation methods over the channel, and that s what your Flex application invokes. The following is the Flex application code:

Figure 9-1. Saving a user s name with IsolatedStorageSettings Now that you have briefly looked at some of the key classes associated with Silverlight s isolated storage, let s try building an application that uses this storage.

Execution Plan (8.1.7.4 WITH push_subq hint - early subquery) -------------------------------------------------------------0 SELECT STATEMENT Optimizer=ALL_ROWS (Cost=22 Card=7 Bytes=126) 1 0 NESTED LOOPS (Cost=22 Card=7 Bytes=126) 2 1 TABLE ACCESS (BY INDEX ROWID) OF 'PARENT' (Cost=4 Card=6 Bytes=54) 3 2 INDEX (RANGE SCAN) OF 'PAR_PK' (UNIQUE) (Cost=2 Card=6) 4 2 TABLE ACCESS (BY INDEX ROWID) OF 'SUBTEST' (Cost=2 Card=1 Bytes=14) 5 4 INDEX (UNIQUE SCAN) OF 'SUB_PK' (UNIQUE) (Cost=1 Card=1) 6 1 TABLE ACCESS (BY INDEX ROWID) OF 'CHILD' (Cost=3 Card=817 Bytes=7353) 7 6 INDEX (RANGE SCAN) OF 'CHI_PK' (UNIQUE) (Cost=2 Card=817) Statistics ----------------------320 consistent gets As you can see, the number of logical I/Os has dropped significantly. If you run a more thorough analysis of the work done, you will also find that various other measures of the work done (CPU used, latch gets, 'buffer is pinned count') drop in a similar fashion so the benefit you can see in the consistent gets is a real benefit. (The costs of the two execution plans for both 9i and 10g nearly reflect this drop although, as you can see from the preceding example, both execution plans have the same cost in 8i.) Note how the first execution plan has a filter operation in line 1, with child operations in lines 2 and 7. This means that too many rows are joined in line 2, and then every row returned by the join is subject to the subquery test (although the filter optimization described later in this chapter made this step a negligible overhead). In the second execution plan, there is no apparent filter operation, but you will notice that the nested loop at line 1 still has tables parent and child as its child operations (lines 2 and 6). However, the table called subtest now appears in line 4 as a child operation to line 2, which is the table access to table parent. In fact, the execution plan is not telling us the whole truth. But you have to switch to 9i and look at the view v$sql_plan_statistics to work out what s really happening and even then, the image you get of the execution plan is misleading. The following plan comes from v$sql_plan after running the query with the push_subq hint but the second and third columns show the last_starts and last_output_rows figures from the dynamic performance view v$sql_plan_statistics: