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What is a tracking branch?
...es fetches all the remote references and then automatically merges in the corresponding remote branch.
When you clone a repository, it generally automatically creates a master branch that tracks origin/master. That’s why git push and git pull work out of the box with no other arguments. However, ...
What is ASP.NET Identity's IUserSecurityStampStore interface?
... in ASP.NET), I came across this interface when implementing my own UserStore :
3 Answers
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How can one check to see if a remote file exists using PHP?
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You can instruct curl to use the HTTP HEAD method via CURLOPT_NOBODY.
More or less
$ch = curl_init("http://www.example.com/favicon.ico");
curl_setopt($ch, CURLOPT_NOBODY, true);
curl_exec($ch);
$retcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
// $retcode >= 400 -> not found, $retcode = ...
C++ “virtual” keyword for functions in derived classes. Is it necessary?
...is no difference between them other than that the first approach requires more typing and is potentially clearer.
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How to use “not” in xpath?
I want to write something of the sort:
4 Answers
4
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Is there an online name demangler for C++? [closed]
I'm getting a fairly long and confusing link error, and would love it if I could just paste it into some textbox on some website and have the names un-mangled for me.
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What exception classes are in the standard C++ library
...at are included in the standard C++ library, and what should they be used for? I know there are a few new C++11 exceptions, but I'm not sure what they are or where they are.
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How to configure Ruby on Rails with no database?
It would be convenient to use Ruby on Rails for a small website project that has no current need for a database. I know I could create an empty database in MySQL and go from there, but does anyone know a better way to run Rails without a database?
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Difference between dispatch_async and dispatch_sync on serial queue?
...spatch_async return after it is added to the queue and may not finished.
for this code
dispatch_async(_serialQueue, ^{ printf("1"); });
printf("2");
dispatch_async(_serialQueue, ^{ printf("3"); });
printf("4");
It may print 2413 or 2143 or 1234 but 1 always before 3
for this code
dispatch_sync...
Why switch is faster than if
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@fivetwentysix: No, refer to this for info: artima.com/underthehood/flowP.html . Quote from article: When the JVM encounters a tableswitch instruction, it can simply check to see if the key is within the range defined by low and high. If not, it takes the defa...