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Why doesn't C have unsigned floats?
... answer to that is that there was no unsigned float standard defined originally. Since languages like to be backwards compatible, even if it were added languages couldn't make use of it. To see the floating point spec you should look at the IEEE standard 754 Floating-Point.
You can get around not...
How to “EXPIRE” the “HSET” child key in redis?
...y TTL support. It uses hmap and zset Redis objects under the hood. Usage example:
RMapCache<Integer, String> map = redisson.getMapCache('map');
map.put(1, 30, TimeUnit.DAYS); // this entry expires in 30 days
This approach is quite useful.
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Sublime Text 2: How to delete blank/empty lines
... also matches zero occurences and \s* will match the extra '\r' when for example editing windows text in a linux environment, so ^\s*$ does the trick.
– drevicko
Nov 1 '14 at 9:41
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How do I change Eclipse to use spaces instead of tabs?
...al » Editors » Text Editors » Insert spaces for tabs (check it)
For PHP:
PHP » Code Style » Formatter » Tab policy (choose "spaces")
PHP » Code Style » Formatter » Indentation size (set to 4)
For CSS:
Web » CSS » Editor » Indent using spaces (select it)
Web » CSS » Editor ...
Where can I find the Java SDK in Linux after installing it?
...what files it installs and where it installs them by querying dpkg. For example for the package 'openjdk-6-jdk': dpkg -L openjdk-6-jdk
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File system that uses tags rather than folders?
..."
another implementation, last release 2006
http://www.chipx86.com/w/index.php/Leaftag
On integration with OSes, I dont think it should be that difficult. OSes are deeply dependent on file system hierarchy's but tag based file system can mimic directory structure. For example in a tag based file sy...
“Failed to load platform plugin ”xcb“ ” while launching qt5 app on linux without qt installed
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In my case sudo apt-get install libx11-xcb1 fixed the problem. But your recommendation of using ldd was what pointed me to the correct library to install. Thanks!
– Daniel
Mar 17 '15 at 0:37
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What does -fPIC mean when building a shared library?
...es and independence between individual modules, but I'm not sure what it really means. Can you explain?
3 Answers
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How can I extract the folder path from file path in Python?
I would like to get just the folder path from the full path to a file.
6 Answers
6
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Copy constructor for a class with unique_ptr
...nt > up_;
public:
A( int i ) : up_( new int( i ) ) {}
A( const A& a ) : up_( new int( *a.up_ ) ) {}
};
int main()
{
A a( 42 );
A b = a;
}
You can, as NPE mentioned, use a move-ctor instead of a copy-ctor but that would result in different semantics of your class. A move-ctor w...