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How to set JAVA_HOME in Linux for all users
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edited May 23 '18 at 19:41
Robin Green
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How do I check (at runtime) if one class is a subclass of another?
Let's say that I have a class Suit and four subclasses of suit: Heart, Spade, Diamond, Club.
9 Answers
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Convert a series of parent-child relationships into a hierarchical tree?
...d/parent pairs to a tree structure and another recursive function to print it out. Only one function would suffice but here's two for clarity (a combined function can be found at the end of this answer).
First initialize the array of child/parent pairs:
$tree = array(
'H' => 'G',
'F' =&...
How to choose the right bean scope?
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Introduction
It represents the scope (the lifetime) of the bean. This is easier to understand if you are familiar with "under the covers" working of a basic servlet web application: How do servlets work? Instantiation, sessions, shared va...
Visual C++: How to disable specific linker warnings?
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Add the following as a additional linker option:
/ignore:4099
This is in Properties->Linker->Command Line
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Is it better practice to use String.format over string Concatenation in Java?
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I'd suggest that it is better practice to use String.format(). The main reason is that String.format() can be more easily localised with text loaded from resource files whereas concatenation can't be localised without producing a new executab...
Common use-cases for pickle in Python
...that I have come across:
1) saving a program's state data to disk so that it can carry on where it left off when restarted (persistence)
2) sending python data over a TCP connection in a multi-core or distributed system (marshalling)
3) storing python objects in a database
4) converting an arbit...
What are the “must have” jQuery plugins? [closed]
...ieving and manipulating json data.
Cookie
Simple & lightweight utility plugin for reading, writing and deleting cookies.
Vaildation
For validating form input data.
UI
Full-featured themable and ready-to-use widgets and more...
Interface
Dragging, Sortables, Droppables, plug-and-play...
How can I remove a button or make it invisible in Android?
How can I remove a button in Android, or make it invisible?
14 Answers
14
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Get HTML5 localStorage keys
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for (var key in localStorage){
console.log(key)
}
EDIT: this answer is getting a lot of upvotes, so I guess it's a common question. I feel like I owe it to anyone who might stumble on my answer and think that it's "right" just because it was accepted to make an update. Truth i...