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How would you implement an LRU cache in Java?
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I like lots of these suggestions, but for now I think I'll stick with LinkedHashMap + Collections.synchronizedMap. If I do revisit this in the future, I'll probably work on extending ConcurrentHashMap in the same way LinkedHashMap extends HashMap.
UPDATE:
By reques...
What is Double Brace initialization in Java?
... }});
}};
return source;
}
}
The returned Map will now contain a reference to the enclosing instance of ReallyHeavyObject. You probably don't want to risk that:
Image from http://blog.jooq.org/2014/12/08/dont-be-clever-the-double-curly-braces-anti-pattern/
3. You can pret...
How to wait for several Futures?
...ld a tuple with 3 slots, corresponding to the results of the 3 futures.
Now if you need the behavior where you want to stop waiting if say fut2 fails first, things get a little trickier. In the above example, you would have to wait for fut1 to complete before realizing fut2 failed. To solve tha...
CSS Printing: Avoiding cut-in-half DIVs between pages?
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Works in Safari 6 :) which is in developer preview now
– Linus Unnebäck
Jul 21 '12 at 17:14
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How do I push amended commit to the remote Git repository?
...wo people pushing to the same repository at about the same time would not know that there was a new commit coming in at the same time and whoever pushed last would lose the work of the previous pusher without either of them realising this.
If you know that you are the only person pushing and you wa...
Git fetch remote branch
...ess for me, it created a local branch named origin/<branch> which is now ambiguous to the remote branch origin/<branch> and I don't know how to get rid of the crazy local branch!
– Alan Moore
Jul 9 '15 at 17:00
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Concept behind these four lines of tricky C code
...ical consumer computer, a double is 8 bytes long, and uses a certain well-known internal representation. The initial values of the array are computed so that when the "algorithm" is performed, the final value of the first double will be such that the internal representation (8 bytes) will be the ASC...
Is there a valid reason for enforcing a maximum width of 80 characters in a code file, this day and
...rminals or on 80-column printouts. Those requirement have mostly gone away now, but there are still valid reasons to keep the 80 column rule:
To avoid wrapping when copying code into email, web pages, and books.
To view multiple source windows side-by-side or using a side-by-side diff viewer.
To i...
Container View Controller Examples [closed]
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do you have the sample code now, i need it because i have tried a lot but no solute yet.
– iPhone Programmatically
Dec 14 '12 at 10:33
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How useful/important is REST HATEOAS ( maturity level 3)?
...HOWEVER, billions of people experience the benefits of REST today. Do you know what the "checkout" URL is at Amazon? I don't. Yet, I can checkout every day. Has that URL changed? I dunno, I don't care.
Do you know does care? Anyone who's written a screen scraped Amazon automated client. Someone wh...