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background:none vs background:transparent what is the difference?
...peat
background-attachment
background-position
That's mean, you can group all styles in one, like:
background: red url(../img.jpg) 0 0 no-repeat fixed;
This would be (in this example):
background-color: red;
background-image: url(../img.jpg);
background-repeat: no-repeat;
background-attachment: fi...
How to import an excel file in to a MySQL database
...alues (e.g. ',', while using 'as defined in cell properties' separator for all other values. Best to stay away from CSV.
– afk5min
Apr 12 '14 at 15:14
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mysql - how many columns is too many?
...eral rule, your table structure should reflect your domain model; if you really do have 70 (100, what have you) attributes that belong to the same entity there's no reason to separate them into multiple tables.
share
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When to use volatile with multi threading?
....
However two threads both accessing a shared variable is something which calls for protection via a mutex isn't it?
But in that case, between the thread locking and releasing the mutex the code is in a critical section where only that one thread can access the variable, in which case the variable ...
How does the bitwise complement operator (~ tilde) work?
...ng the binary representation of a number, taking its complement (inverting all the bits) and adding one. Two starts as 0000 0010, and by inverting the bits we get 1111 1101. Adding one gets us the result above. The first bit is the sign bit, implying a negative.
So let's take a look at how we get ~2...
How to use PHP OPCache?
PHP 5.5 has been released and it features a new code caching module called OPCache, but there doesn't appear to be any documentation for it.
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How to “inverse match” with regex?
...place of .{6}
Edit (again): Note that lookaheads and lookbehinds are generally not the right way to "inverse" a regular expression match. Regexps aren't really set up for doing negative matching, they leave that to whatever language you are using them with.
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Prevent user from seeing previously visited secured page after logout
...from the browser cache instead of straight from the server. This is essentially harmless, but indeed confusing to the enduser, because s/he incorrectly thinks that it's really coming from the server.
You just need to instruct the browser to not cache all the restricted JSP pages (and thus not only ...
Git Checkout warning: unable to unlink files, permission denied
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I usually see that kind of error when there is a process not releasing the handle of those files.
Make sure nothing is running, and then try your checkout again.
Note: it can also be related with the way Git has been installed (...
List all files and directories in a directory + subdirectories
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string[] allfiles = Directory.GetFiles("path/to/dir", "*.*", SearchOption.AllDirectories);
where *.* is pattern to match files
If the Directory is also needed you can go like this:
foreach (var file in allfiles){
FileInfo in...