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What is the best way to get the count/length/size of an iterator?
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If you've just got the iterator then that's what you'll have to do - it doesn't know how many items it's got left to iterate over, so you can't query it for that result. There are utility methods that will seem to do this (such as Iterators.size() in Guava), but underneath they're just pe...
What is the idiomatic way to compose a URL or URI in Java?
How do I build a URL or a URI in Java? Is there an idiomatic way, or libraries that easily do this?
7 Answers
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How to define a circle shape in an Android XML drawable file?
I have some problems finding the documentation of the definitions of shapes in XML for Android. I would like to define a simple circle filled with a solid color in an XML File to include it into my layout files.
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Update a submodule to the latest commit
... BTW, if you are not the owner of the submodule, you can just do git submodule update when someone else updated the projA(you'll get a new commit id).
– Kjuly
Nov 19 '11 at 3:09
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What's the difference between the Dependency Injection and Service Locator patterns?
...nsible for creating its dependencies. It just uses the service locator to do it. With DI, the class is given its dependencies. It neither knows, nor cares where they come from. One important result of this is that the DI example is much easier to unit test -- because you can pass it mock impleme...
How do CSS triangles work?
...e without adding additional elements simply by using :before or :after pseudo classes.
– zzzzBov
Aug 16 '11 at 13:24
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Uses for the Java Void Reference Type?
...xample Map values (although Collections.newSetFromMap uses Boolean as maps don't have to accept null values) and java.security.PrivilegedAction.
I wrote a weblog entry on Void a few years back.
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pod install -bash: pod: command not found
...ed Ruby some time ago and blasted away a whole load of gems. Solution:
sudo gem install cocoapods
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What's the proper way to install pip, virtualenv, and distribute for Python?
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You can do this without installing anything into python itself.
You don't need sudo or any privileges.
You don't need to edit any files.
Install virtualenv into a bootstrap virtual environment. Use the that virtual environment to ...
application/x-www-form-urlencoded or multipart/form-data?
...cient than the other. To understand why, you have to look at what each is doing under the covers.
For application/x-www-form-urlencoded, the body of the HTTP message sent to the server is essentially one giant query string -- name/value pairs are separated by the ampersand (&), and names are s...