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Get keys from HashMap in Java
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This is doable, at least in theory, if you know the index:
System.out.println(team1.keySet().toArray()[0]);
keySet() returns a set, so you convert the set to an array.
The problem, of course, is that a set doesn't promise to keep your order. If you only have one...
how to check if List element contains an item with a Particular Property Value
...ists pricePublicModel.Size == 200 ? Also, if this element exists, how to know which one it is?
6 Answers
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How can I resize an image using Java?
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Riyad, I liked using Scalr. I am curious to know, how did you end up picking an API with all static methods? I had written a similar api which was closer to a builder. Like new ImageScaler(img).resizeTo(...).rotate(...).cropTo(...).toOutputBuffer(). I like your way too ...
How can I update a single row in a ListView?
...separate thread (with a queue and all) and when the image is downloaded, I now call notifyDataSetChanged() on the list adapter to update the image. This works, but getView() is getting called too frequently, since notifyDataSetChanged() calls getView() for all visible items. I want to update...
How to create a numpy array of all True or all False?
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Now a famous meme: devhumor.com/media/…
– WLGfx
Dec 2 '17 at 10:48
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What is the difference between `after_create` and `after_save` and when to use which?
... after after destroying the record? Or in the ops case, send an email to a now deleted user? Be careful with using after_commit
– rmcsharry
Jul 1 '19 at 15:33
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What's the difference between TRUNCATE and DELETE in SQL
...ledBack in SQL SERVER. And in the 2nd row DELETE dose not reset identity. Now how can you edit this post? That's the bad thing about using pictures in StackOverflow.
– Mahmood Jenami
Aug 3 '16 at 8:05
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enum - getting value of enum on string conversion
...x = 1
y = 2
def __str__(self):
return '%s' % self.value
now I can just do
print(D.x) to get 1 as result.
You can also use self.name in case you wanted to print x instead of 1.
share
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File changed listener in Java
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This is no longer true in Java 7: there's now an API for this that can hook into the OS's notification services: blogs.oracle.com/thejavatutorials/entry/…
– Arnout Engelen
Sep 29 '11 at 10:00
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How to create a new branch from a tag?
... same name.
In this, and in similar scenarios, the important thing is to know: branches and tags are actually single-line text files in .git/refs directory, and we can reference them explicitly using their pathes below .git. Branches are called here "heads", to make our life more simple.
Thus, ref...