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What is the difference between a definition and a declaration?

...bes its type, be it a type, object, or function. A declaration is what the compiler needs to accept references to that identifier. These are declarations: extern int bar; extern int g(int, int); double f(int, double); // extern can be omitted for function declarations class foo; // no extern allow...
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Timeout expired. The timeout period elapsed prior to completion of the operation or the server is no

...tabase's statistics and/or query plan cache are incorrect The query is too complex and needs to be tuned A deadlock can be difficult to fix, but it's easy to determine whether that is the case. Connect to your database with Sql Server Management Studio. In the left pane right-click on the server n...
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How do I create a unique constraint that also allows nulls?

... edited May 23 '17 at 12:10 Community♦ 111 silver badge answered Apr 20 '09 at 10:20 Jose BasilioJose Ba...
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IEnumerable vs List - What to Use? How do they work?

...an implementation of that behavior. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimizing along the way. If you use ToList() you force the compiler to reify the results right away. Whenever I'm "stacking" LINQ expressions, I use IEnumerable, because...
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C++ equivalent of java's instanceof

...{ return dynamic_cast<const Base*>(ptr) != nullptr; } Example: http://cpp.sh/6qir share | improve this answer | follow | ...
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Get list of passed arguments in Windows batch script (.bat)

... dancavallaro has it right, %* for all command line parameters (excluding the script name itself). You might also find these useful: %0 - the command used to call the batch file (could be foo, ..\foo, c:\bats\foo.bat, etc.) %1 is the first command line parameter,...
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What is time_t ultimately a typedef to?

...s of arithmetic operations applied to time values. Unix and POSIX-compliant systems implement the time_t type as a signed integer (typically 32 or 64 bits wide) which represents the number of seconds since the start of the Unix epoch: midnight UTC of January 1, 1970 (not counting ...
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What Automatic Resource Management alternatives exist for Scala?

... community wiki 2 revschengpohi ...
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How can I create a UIColor from a hex string?

...hex format string to an integer for use with this macro, see stackoverflow.com/questions/3648411/…. – devios1 Aug 14 '14 at 21:18  |  show 5...
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Is there a way to define a min and max value for EditText in Android?

... First make this class : package com.test; import android.text.InputFilter; import android.text.Spanned; public class InputFilterMinMax implements InputFilter { private int min, max; public InputFilterMinMax(int min, int max) { this.min =...