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New features in java 7
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Java SE 7 Features and Enhancements from JDK 7 Release Notes
This is the Java 7 new features summary from the OpenJDK 7 features page:
vm JSR 292: Support for dynamically-typed languages (InvokeDynamic)
Strict class-file checking
lang JSR 334: S...
How to save a PNG image server-side, from a base64 data string
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You need to extract the base64 image data from that string, decode it and then you can save it to disk, you don't need GD since it already is a png.
$data = 'data:image/png;base64,AAAFBfj42Pj4';
list($type, $data) = explode(';', $data);
list(, $data) = explode(...
Will the base class constructor be automatically called?
... What you say is true. However, there is nothing preventing Base from having a parameterless constructor in addition to the parameterized constructor that set SomeNumber to, say, a random number. AlwaysThreeDerived would still use the base(3) call, but another class (call it RandomDerived...
How can I maintain fragment state when added to the back stack?
...tten up a dummy activity that switches between two fragments. When you go from FragmentA to FragmentB, FragmentA gets added to the back stack. However, when I return to FragmentA (by pressing back), a totally new FragmentA is created and the state it was in is lost. I get the feeling I'm after th...
What version of javac built my jar?
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You can't tell from the JAR file itself, necessarily.
Download a hex editor and open one of the class files inside the JAR and look at byte offsets 4 through 7. The version information is built in.
http://en.wikipedia.org/wiki/Java_class...
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
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How do I run IDEA IntelliJ on Mac OS X with JDK 7?
... variables that work fine in Terminal, other applications that you run not from the Terminal will not see these variables. A workaround for this problem is to start the application directly from the Terminal, for IDEA the following command can be used:
open -a /Applications/IntelliJ\ IDEA\ 12.app/
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Logout: GET or POST?
...ures, a logout that then asks me if I'm sure. Guess it keeps the prefetch from logging you out, but Amazon, Ebay, and Gmail all use GET for logout without that trick page in between what the user is told is logout and the actual logout event. I would imagine that in between page would lead to a lo...
Prevent scroll-bar from adding-up to the Width of page on Chrome
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Webkit browsers like Safari and Chrome subtract the scroll bar width from the visible page width when calculating width: 100% or 100vw. More at DM Rutherford's Scrolling and Page Width.
Try using overflow-y: overlay instead.
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Why doesn't requests.get() return? What is the default timeout that requests.get() uses?
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From requests documentation:
You can tell Requests to stop waiting for a response after a given
number of seconds with the timeout parameter:
>>> requests.get('http://github.com', timeout=0.001)
Traceback (mos...