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Can't find a “not equal” css attribute selector
...r is that it will also select elements that do not have a foo attribute at all. Consider:
<div>No foo</div>
<div foo="">Empty foo</div>
<div foo="x">XXX</div>
<div foo="y">YYY</div>
<div foo="z">ZZZ</div>
div:not([foo='']) will select bot...
Is System.nanoTime() completely useless?
...cific counter. Now consider the following case I use to measure time of a call:
15 Answers
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How to change variables value while debugging with LLDB in Xcode?
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expr myString = @"Foo"
(lldb) help expr
Evaluate a C/ObjC/C++ expression in the current
program context, using variables currently in scope. This command
takes 'raw' input (no need to quote stuff).
Syntax: expression --...
Is the “struct hack” technically undefined behavior?
...rictly conforming with the C Standard, although it does seem to work under all known implementations. (Compilers which check array bounds carefully might issue warnings.)
The rationale behind the 'strictly conforming' bit is in the spec, section J.2 Undefined behavior, which includes in the list o...
What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
Can anybody give a clear explanation of how variable assignment really works in Makefiles.
6 Answers
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Normal arguments vs. keyword arguments
How are "keyword arguments" different from regular arguments? Can't all arguments be passed as name=value instead of using positional syntax?
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Is a memory leak created if a MemoryStream in .NET is not closed?
... hiding means you may at some future point want to refactor:
MemoryStream foo()
{
MemoryStream ms = new MemoryStream();
// write stuff to ms
return ms;
}
to:
Stream foo()
{
...
}
This emphasizes that callers should not care what kind of Stream is being returned, ...
How do I define global variables in CoffeeScript?
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Since coffee script has no var statement it automatically inserts it for all variables in the coffee-script, that way it prevents the compiled JavaScript version from leaking everything into the global namespace.
So since there's no way to make something "leak" into the glob...
Best way to test if a row exists in a MySQL table
...RE ...)
and per the documentation, you can SELECT anything.
Traditionally, an EXISTS subquery starts with SELECT *, but it could
begin with SELECT 5 or SELECT column1 or anything at all. MySQL
ignores the SELECT list in such a subquery, so it makes no difference.
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Extracting extension from filename in Python
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@klingt.net Well, in that case, .asd is really the extension!! If you think about it, foo.tar.gz is a gzip-compressed file (.gz) which happens to be a tar file (.tar). But it is a gzip file in first place. I wouldn't expect it to return the dual extension at all.
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