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Allow me to digress a bit to expand on a subject I started discussing earlierplans that are dependent on the selectivity of the query. The efficiency of the last plan is dependent on selectivity because you get one whole lookup per sought row. At some selectivity point, the optimizer would realize that a table scan is more efficient than using this plan. You might find it surprising, but that selectivity point is a pretty small percentage. Even if you have no clue about how to calculate this point, you can practice a trial-and-error approach, where you apply a binary algorithm, shifting the selectivity point to the left or right based on the plan that you get. Remember that high selectivity means a low percentage of rows, so going to the left of a selectivity point (lowering the percentage) would mean getting higher selectivity. You can invoke a range query, where you start with 50 percent selectivity by invoking the following query: SELECT orderid, custid, empid, shipperid, orderdate FROM dbo.Orders WHERE orderid >= 500001;
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Such a name should be replaced by found, done, or processingComplete and then negated with an operator as appropriate. If what you re looking for is found, you have found instead of not notFound.
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Both the Meeting and Calendar tools help you and your team focus on the tasks, events, and milestones of the project or activity for which the Office Groove 2007 workspace is created. You and your team members will continue to manage and organize your personal calendars, tasks, and contacts using Microsoft Office Outlook 2007.
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that you add the environment variable ANT_HOME to your system and the bin directory under the ANT_HOME directory to your system s executable path. The bin directory contains scripts in many different formats for the most popular platforms. These scripts facilitate the execution of Ant and include DOS batch, UNIX shell, and Perl and Python scripts. Ant also relies on the JAVA_HOME environment variable to determine the JDK to be used. qr code reader free
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Just as a lmmaker would, the best way to start getting visual in your storyboard is to sketch what you would like on each slide before you go looking for the actual graphics that you ll use. Creating sketches of the slides accelerates the design process because it keeps you from getting distracted amidst the many visual possibilities you ll nd when you search through photo and graphics libraries. A series of sketches can also help you to select a consistent style, because you see all of the slides together and can consider a design for all of the slides at once.
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The Cer.None value indicates that the method makes no CER guarantees . In other words, it wasn t written with CERs in mind; therefore, it may fail and it may or may not report that it failed . Remember that most of these settings are giving a method a way to document what it offers to potential callers so that they know what to expect . The CLR and JIT compiler do not use this information . When you want to write a reliable method, make it small and constrain what it does . Make sure that it doesn t allocate any objects (no boxing, for example), don t call any virtual methods or interface methods, use any delegates, or use reflection because the JIT compiler can t tell what method will actually be called . However, you can manually prepare these methods by calling one of these methods defined by the RuntimeHelpers s class:
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The most interesting fact that this data reveals is that the modal rates don t rise above 75 percent for any single technique, and the techniques average about 40 percent. Moreover, for the most common kind of defect detection, unit testing, the modal rate is only 30 percent. The typical organization uses a test-heavy defect-removal approach, and achieves only about 85% defect removal efficiency. Leading organizations use a wider variety of techniques and achieve defect removal efficiencies of 95 percent or higher (Jones 2000). The strong implication is that if project developers are striving for a higher defect-detection rate, they need to use a combination of techniques. A classic study by Glenford Myers confirmed this implication (Myers 1978b). Myers studied a group of programmers with a minimum of 7 and an average of 11 years of professional experience. Using a program with 15 known errors, he had each programmer look for errors using one of these techniques: Execution testing against the specification Execution testing against the specification with the source code Walkthrough/inspection using the specification and the source code
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/X (Ignore Standard Include Paths) Getting a correct build can sometimes be a pain if you have multiple compilers and SDKs installed on your machine. If you don't use the /X switch, the compiler, when invoked by a INCLUDE environment variable. To control exactly which header MAK file, will use the files are included, the /X switch will cause the compiler to ignore the INCLUDE environment variable and look only for header files in the locations you explicitly specify with the /I switch. You can set this switch in the project Property Pages dialog box, C/C++ folder, Preprocessor property page, Ignore Standard Include Path property. /Zp (Struct Member Alignment) You should not use this flag. Instead of specifying on the command line how structure members should be aligned in memory, you should align structure members by using the #pragma pack directive inside specific headers. I've seen some huge bugs in code because the development team originally built by setting /Zp. When they moved to a new build or another team went to use their code, the /Zp switch was forgotten, and structures were slightly different because the default alignment was different. It took a long time to find those bugs. You can set this switch in the project Property Pages dialog box, C/C++ folder, Code Generation property page\Struct Member Alignment property. If you do happen to be setting the #pragma pack directive, don't forget about the new #pragma pack (show) option, which will report the packing to the Build window when compiling. That option will help you keep track of what the current alignment across sections of code actually is. /Wp64 (Detect 64-bit Portability Issues) This excellent switch will save you lots of time getting your code 64-bit ready. You can turn it on in the project Property Pages dialog box, C/C++ folder, General property page by setting Detect 64-bit Portability Issues to Yes (/Wp64). It's best to start your new development with this switch. If you try it on a bunch of code for the first time, you can be overwhelmed by the number of problems reported since it's very picky. Additionally, some of the Microsoft-supplied macros that are supposed to help with Win64 portability, such as SetWindowLongPtr, have errors reported by the /Wp64 switch. /RTC (Run-Time Error Checks) These are the greatest switches known to C++ kind! There are three run-time check switches. /RTCc enables checking for data loss when converting values to a smaller data type. /RTCu helps track down uninitialized variable references. /RTCs enables some excellent stack-frame checking by initializing all local variables to a known value (0xCC), detecting local variable underruns and overruns, and validating stack pointers for stack corruption. You can set these switches in the project Property Pages dialog box, C/C++ folder, Code Generation property page\Smaller Type Check and Basic Runtime Checks properties. These switches are so important that I discuss them in detail in 17. /GS (Buffer Security Check) One of the most common techniques of virus writers is to exploit buffer overruns so that they can redirect the return address to malicious code. Fortunately, the /GS switch inserts security checks to ensure that the return address isn't overwritten, which makes writing those kinds of viruses much more difficult. /GS is set by default in release builds, and I would encourage you to use it in your debug builds as well. The first time it tracks down that one wild write that just so happens to overwrite only the return address, you'll see how 45
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characters or the underscore. No spaces or special characters can be used. When the argument has the Single Line of Text data type, up to 256 characters can be entered. Whole numbers must fall between -2,147,483,648 and 2,147,483,647. Floating point numbers can contain up to five decimal places.
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Click Load Drivers if you need to load drivers for your hard disks and follow the prompts to provide the necessary drivers. Click Next to open the System Recovery Options dialog box shown in Figure 27-3.
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