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TCP: can two different sockets share a port?
...utbound connections to use a random client-side port, in which case it is possible to run out of available ports if you make a lot of connections in a short amount of time.
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Difference between java.util.Random and java.security.SecureRandom
...t clearly shows that you should never use an LCG for security-critical purposes. This also means that your random numbers are predictable right now, something you don't want for session IDs and the like.
How to break a Linear Congruential Generator
The assumption that an attacker would have to wai...
Ubuntu running `pip install` gives error 'The following required packages can not be built: * freety
...<string>
e.g:
apt-cache search freetype | grep dev
Redhat/CentOS/Fedora:
yum -y install freetype-devel
To search for packages on Redhat/CentOS/Fedora based systems:
yum search <string>
e.g:
yum search freetype | grep devel
Mac OS X: (via Homebrew)
brew install freetype...
Some questions about Automatic Reference Counting in iOS5 SDK
I'm currently developing an app for iPad. The development started for iOS 4.2 and is now continuing (and I think will be completed) for iOS 4.3.
I just read about ARC in iOS 5, and basically I understood that we will never need to release and retain objects anymore. My questions are:
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Detect iPad Mini in HTML5
... more ways than we'd want. In JavaScript, the window.navigator object exposes the same values for the Mini and iPad 2. My tests so far to detect the difference have not lead to success.
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Change the default editor for files opened in the terminal? (e.g. set it to TextEdit/Coda/Textmate)
...
Most programs will check the $EDITOR environment variable, so you can set that to the path of TextEdit in your bashrc. Git will use this as well.
How to do this:
Add the following to your ~/.bashrc file:
export EDITOR="/Appli...
What's the difference between Thread start() and Runnable run()
... I consider that before we call Thread#start() ,nothing really relative to os thread happens? It is only a java object.
– Jaskey
Dec 6 '14 at 9:38
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Meaning of Choreographer messages in Logcat [duplicate]
...ce.
Android view animations internally uses Choreographer for the same purpose: to properly time the animations and possibly improve performance.
Since Choreographer is told about every vsync events, it can tell if one of the Runnables passed along by the Choreographer.post* apis doesn't finish in o...
Disable activity slide-in animation when launching new activity?
... which launches another activity, via a button click. By default, on newer OS versions of android, the OS will animate the new activity sliding in from right to left.
...
Excel Date to String conversion
... formats: see Guidelines for date and time formats on this page office.microsoft.com/en-us/excel-help/…
– codea
Sep 9 '13 at 21:07
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