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Mapping two integers to one, in a unique and deterministic way
..., we need an output of size at least 2^16 * (2^16 -1), which is equal to 2^32 - 2^16, or in other words, a map of 32 bit numbers should be feasible ideally. This may not be of little practical importance in programming world.
Cantor pairing function:
(a + b) * (a + b + 1) / 2 + a; where a, b >...
How to print a query string with parameter values when using Hibernate
...-30 18:01:15,084 | binding parameter [1] as [TIMESTAMP] - 2012-07-11 09:57:32.0
2013-08-30 18:01:15,085 | binding parameter [2] as [TIMESTAMP] - Fri Aug 30 18:01:15 CEST 2013
2013-08-30 18:01:15,086 | binding parameter [3] as [INTEGER] -
2013-08-30 18:01:15,086 | binding parameter [4] as [VARCHAR] -...
Changing the default folder in Emacs
...it with a shortcut.
Create a shortcut to C:\emacs\emacs-21.3\bin\runemacs.exe. Edit the properties of the shortcut and change the value of Start In: to be whatever you want your default directory to be.
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How to create an alias for a command in Vim?
...) is# 'W')?('w'):('W'))
As a function:
fun! SetupCommandAlias(from, to)
exec 'cnoreabbrev <expr> '.a:from
\ .' ((getcmdtype() is# ":" && getcmdline() is# "'.a:from.'")'
\ .'? ("'.a:to.'") : ("'.a:from.'"))'
endfun
call SetupCommandAlias("W","w")
This checks that the...
How do I find out which keystore was used to sign an app?
...h because later I need to pipe the output to grep):
find . -name "*.apk" -exec echo "APK: {}" \; -exec sh -c 'keytool -printcert -jarfile "{}"' \;
Sample output:
APK: ./com.google.android.youtube-10.39.54-107954130-minAPI15.apk
Signer #1:
Signature:
Owner: CN=Unknown, OU="Google, Inc", O="Googl...
No connection string named 'MyEntities' could be found in the application config file
...@Alexander, the framework loads and uses the configuration file(s) for the executing assembly. In this case, it's the web project. Class libraries generally don't have their own configuration files.
– kiprainey
Mar 20 '14 at 17:21
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Does SVG support embedding of bitmap images?
...ge
width="100" height="100"
xlink:href="data:image/png;base64,IMAGE_DATA"
/>
...
</svg>
The svg element attribute xmlns:xlink declares xlink as a namespace prefix and says where the definition is. That then allows the SVG reader to know what xlink:href means.
Th...
Where are static variables stored in C and C++?
...nsist of initialized variables and constants. On a microcontroller (ex: STM32), Initialized variables are stored by default in Flash memory and copied to RAM at startup, and initialized constants are left in, and intended to be read from, Flash only, along with the text, which contains the program i...
How can I create download link in HTML?
...h to resource.name of file">Link</a>
<a href="files/installer.exe">Link to installer</a>
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Proper way to add svn:executable
I have a few files that have been executable before svn adding them. They have the svn:executable property set. Now, a few other files were checked in without the executable bit do not have it, and I want to set the svn:executable property:
...