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Can (domain name) subdomains have an underscore “_” in it?

...zed labels.) The first RFC for internationalization was RFC 3490 of March 2003, "Internationalizing Domain Names in Applications (IDNA)". Today, we have: RFC 5890 "IDNA: Definitions and Document Framework" RFC 5891 "IDNA: Protocol" RFC 5892 "The Unicode Code Points and IDNA" RFC 5893 "Right-to-Le...
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Using arrays or std::vectors in C++, what's the performance gap?

...xt of the Standard indeed did not require it, but there was an addendum in 2003 that addresses this, so it is really covered by the Standard. herbsutter.wordpress.com/2008/04/07/… – Nemanja Trifunovic Dec 19 '08 at 18:13 ...
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what is the difference between OLE DB and ODBC data sources?

.... (They even made ADO the default method for accessing data in Access 2002/2003.) However, it eventually became apparent that this was not going to happen for a number of reasons, such as: The world was not going to convert to Microsoft technologies and away from ODBC; DAO/ODBC was faster than ADO...
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static const vs #define

...he instruction stream. For example MIPs add immediate (cs.umd.edu/class/sum2003/cmsc311/Notes/Mips/addi.html). In this sort of case a #defined integer truly could be said to use no space since in the compiled binary it occupies a few spare bits in instructions which had to exist anyway. ...
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What is the list of possible values for navigator.platform as of today? [closed]

....8 release 517: Opera Mini 7 on any iPhone (2012) BlackBerry BlackBerry (2003) FreeBSD FreeBSD FreeBSD i386: x86 (IA-32) processor FreeBSD amd64: AMD x86-64 processor Linux Seriously unreliable because so many platforms are built on this. For example, Chrome on ChromeOS or Linux x86-64 both ret...
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How can I use threading in Python?

...', 'http://www.python.org/about/', 'http://www.onlamp.com/pub/a/python/2003/04/17/metaclasses.html', 'http://www.python.org/doc/', 'http://www.python.org/download/', 'http://www.python.org/getit/', 'http://www.python.org/community/', 'https://wiki.python.org/moin/', ] # Make the Pool ...
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How to track down a “double free or corruption” error

...of delete is the null pointer the operation has no effect." (ISO/IEC 14882:2003(E) 5.3.5.2) – Component 10 Aug 5 '13 at 17:36  |  show 1 more ...
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Why do you need to create a cursor when querying a sqlite database?

... but also to identify a row in a table to be updated or deleted. The SQL:2003 standard defines positioned update and positioned delete SQL statements for that purpose. Such statements do not use a regular WHERE clause with predicates. Instead, a cursor identifies the row. The cursor must be ...
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What should I do if the current ASP.NET session is null?

... in production, where it has run for years. The platform is Windows Server 2003 R2 SP2, the application has target framework .Net 3.5 and runs in IIS with session state enabled. – R. Schreurs Oct 9 '12 at 8:22 ...
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How to echo with different colors in the Windows command line

...rare thing to see an windows without .NET framework even for the oldest XP/2003 installations) . It uses jscript.net compiler to create an exe capable to print strings with different background/foreground color only for the current line. @if (@X)==(@Y) @end /* JScript comment @echo off setlocal for...