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Convert PDF to image with high resolution
...
It appears that the following works:
convert \
-verbose \
-density 150 \
-trim \
test.pdf \
-quality 100 \
-flatten \
-sharpen 0x1.0 \
24-18.jpg
It results in the left image. Compare this to the result of my original comma...
Environment variable to control java.io.tmpdir?
... variable, but it was unclear if there was some unknown variable for other OSes. It looks like there isn't, at least given what we know about OpenJDK.
– delfuego
Dec 18 '09 at 3:16
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Capturing mobile phone traffic on Wireshark
...ffect the performance with large traffic volumes (eg video streaming)
For IOS 5+ devices, any network: iOS 5 added a remote virtual interface (RVI) facility that lets you use Mac OS X packet trace programs to capture traces from an iOS device. See here for more details
For all phones, wi-fi only: S...
How to handle floats and decimal separators with html5 input type number
...s mainly for mobile browsers. Im using input fields with number type, so (most) mobile browsers invokes only number keyboard for better user experience. This web app is mainly used in regions where decimal separator is comma, not dot, so I need to handle both decimal separators.
...
Good tool to visualise database schema? [closed]
...MySQL and: DB2, Derby, Firebird, HSQLDB, Informix, MaxDB, MS SQL, Oracle, PostgreSQL, SQLite, Sbase, Teradata.
– iled
Feb 2 '16 at 21:27
...
How to check if a string contains an element from a list in Python
... should look to the answer of @Wladimir Palant, or you risk getting false positives.
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Convert a String representation of a Dictionary to a dictionary?
...e.
For example:
>>> eval("shutil.rmtree('mongo')")
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<string>", line 1, in <module>
File "/opt/Python-2.6.1/lib/python2.6/shutil.py", line 208, in rmtree
onerror(os.listdir, path,...
ASP.NET Temporary files cleanup
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Just an update on more current OS's (Vista, Win7, etc.) - the temp file path has changed may be different based on several variables. The items below are not definitive, however, they are a few I have encountered:
"temp" environment variable setting - th...
What is stack unwinding?
...mple:
void func( int x )
{
char* pleak = new char[1024]; // might be lost => memory leak
std::string s( "hello world" ); // will be properly destructed
if ( x ) throw std::runtime_error( "boom" );
delete [] pleak; // will only get here if x == 0. if x!=0, throw exception
}
int...
cannot load such file — zlib even after using rvm pkg install zlib
...v
$ rvm reinstall 1.9.3
[Edit] As commenter @chrisfinne mentions, on CentOS/RedHat based systems:
$ sudo yum install zlib-devel
$ rvm reinstall 1.9.3
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