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When and how should I use a ThreadLocal variable?
...d to be very careful about cleaning up any ThreadLocals you get() or set() by using the ThreadLocal's remove() method.
If you do not clean up when you're done, any references it holds to classes loaded as part of a deployed webapp will remain in the permanent heap and will never get garbage collect...
When to use CouchDB over MongoDB and vice versa
...ning is important.
A recent (Feb 2012) and more comprehensive comparison by Riyad Kalla,
MongoDB : Master-Slave Replication ONLY
CouchDB : Master-Master Replication
A blog post (Oct 2011) by someone who tried both, A MongoDB Guy Learns CouchDB commented on the CouchDB's paging being not as us...
UILabel text margin [duplicate]
...hanging its origin won't do the trick. It would be ideal to inset the text by 10px or so on the left hand side.
38 Answer...
split string in to 2 based on last occurrence of a separator
...ator is not found, return a 3-tuple containing two empty strings, followed by the string itself.
– Petar Ivanov
Dec 2 '14 at 20:10
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Is it safe to check floating point values for equality to 0?
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You might be having a subtractive cancellation error by comparing double1 and double2, in case these numbers have values very close to each other. I would remove the Math.Abs and check each branch individually d1 >= d2 - e and d1 <= d2 + e
– The...
How to copy a selection to the OS X clipboard
... sometimes you don't even have to do the whole "+y ). And you check this by just writing >vim in the terminal and then the version-number is when you start it up.
– Zeth
Sep 9 '16 at 16:50
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What is the meaning of single and double underscore before an object name?
...bles and methods, without having to worry about instance variables defined by derived classes, or mucking with instance variables by code outside the class. Note that the mangling rules are designed mostly to avoid accidents; it still is possible for a determined soul to access or modify a variable ...
Deep cloning objects
...l other options are variations of those) and the best solution is provided by Pedro77's link on the question comments.
So I'll just copy relevant parts of those 2 references here. That way we can have:
The best thing to do for cloning objects in C sharp!
First and foremost, those are all our opti...
Passing multiple error classes to ruby's rescue clause in a DRY fashion
I have some code that needs to rescue multiple types of exceptions in ruby:
3 Answers
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MySQL: Invalid use of group function
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Also if GROUP BY is used, HAVING should be after GROUP BY
– Viacheslav
Jun 22 '14 at 17:40
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