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Capistrano error tar: This does not look like a tar archive
...epo, and run git branch.
It's running git archive as a way to export the selected branch's tree. git archive "writes it out to the standard output" so Capistrano redirects that to tar in order to uncompress the archive immediately into your new release directory.
(Why Capistrano chose this instead...
Threading in a PyQt application: Use Qt threads or Python threads?
...have you considered non-blocking I/O using Twisted or non-blocking sockets/select?
EDIT: more on threads
Python threads
Python's threads are system threads. However, Python uses a global interpreter lock (GIL) to ensure that the interpreter is only ever executing a certain size block of byte-code...
Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
...aping quote will be trimmed (in the 21st character). Then the SQL
sSQL = "select * from USERS where username = '" + username + "' and password = '" + password + "'"
combined with the aforementioned malformed username will result in the password already being outside the quotes, and will just con...
What are the uses of “using” in C#?
...ring> result = events.OrderBy(ev => ev.Key)
.Select(ev => ev.Value)
.ToList();
return result;
}
throw new ArgumentException("Event dictionary is null or empty.");
};
r...
Why don't structs support inheritance?
...hat short[] can't be converted to int[] (short of conversion code, like 'a.Select(x => (int) x).ToArray()'). If the runtime disallowed the cast from Base to Derived, it would be a "wart", as that IS allowed for reference types. So we have two different "warts" possible -- forbid struct inherita...
Retrieve a Fragment from a ViewPager
...
If all you need to do is get the currently selected Fragment, this is all you need - the method setPrimaryItem is set on attach and also on every updated to the internal set of the Fragment as the current item.
– Graeme
Jul 17 '1...
Most tricky/useful commands for gdb debugger [closed]
...n it in reverse
* reverse-finish -- Execute backward until just before the selected stack frame is called
* reverse-next ('rn') -- Step program backward, proceeding through subroutine calls.
* reverse-nexti ('rni') -- Step backward one instruction, but proceed through called subroutines.
* reverse-s...
How do I check if an element is hidden in jQuery?
...lgorithm recommended in the jQuery FAQ.
We use jQuery's is() to check the selected element with another element, selector or any jQuery object. This method traverses along the DOM elements to find a match, which satisfies the passed parameter. It will return true if there is a match, otherwise retu...
What is the difference between pluck and collect in Rails?
...ds with Rails 4, still use pluck
if you need some fields with Rails 3, use selectand collect
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How do you get current active/default Environment profile programmatically in Spring?
...ar functionality using the annotation @Profile("local") Profiles allow for selective configuration based on a passed-in or environment parameter. Here is more information on this technique: Spring Profiles
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