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What to add for the update portion in ConcurrentDictionary AddOrUpdate
... should use GetOrAdd() instead msdn.microsoft.com/en-us/library/ee378674(v=vs.110).aspx
– Rory
May 30 '16 at 16:29
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What is PostgreSQL explain telling me exactly?
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The part I always found confusing is the startup cost vs total cost. I Google this every time I forget about it, which brings me back to here, which doesn't explain the difference, which is why I'm writing this answer. This is what I have gleaned from the Postgres EXPLAIN docum...
Is there an advantage to use a Synchronized Method instead of a Synchronized Block?
... ...
}
private synchronized void someOutputRelatedWork() {
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}
vs.
// Using specific locks
Object inputLock = new Object();
Object outputLock = new Object();
private void someInputRelatedWork() {
synchronized(inputLock) {
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}
}
private void someOutputRelatedWork()...
Select distinct values from a table field
... The Meta: ordering = () "feature" of django orm and objects.distinct() vs. objects.ordering().distinct() caused us hours of confusion. There should be a consumer-safety warning sticker on that product;) We may institute a no-Meta-ordering-attribute policy to prevent the head-scratching in the fu...
Red black tree over avl tree
... same/similar amortized cost but produces better balanced tree (1.44log(N) vs 2log(N)). In the same time, deletion in AVL tree may require more rotations. IMHO, this is addressed in WAVL en.wikipedia.org/wiki/WAVL_tree
– Sergey Shandar
Jan 23 '18 at 19:08
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How do you declare an interface in C++?
... better example. I like to think of it in terms of inheriting an interface vs. inheriting an implementation. In C++ you can either inherit both interface and implementation together (public inheritance) or you can inherit only the implementation (private inheritance). In Java you have the option of...
How to choose between Hudson and Jenkins? [closed]
...mfortable with that and decided to leave.
So it comes down to what Hudson vs Jenkins offers. Both Oracle's Hudson and Jenkins have the code. Hudson has Oracle and Sonatype's corporate support and the brand. Jenkins has most of the core developers, the community, and (so far) much more actual work.
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How can I get the list of files in a directory using C or C++?
...ople get real!! this is a question from 2009 and it has not even mentioned VS. So do not criticize that your full proprietary (although quite nice) IDE is not supporting centuries old OS standards. Also my answer said it is "available" for windows, not "included" in any IDE from now and for all time...
AngularJS best practices for module declaration?
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community wiki
22 revshugo der hungrige
7
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How exactly does __attribute__((constructor)) work?
...s/.dtors mechanism for example require support by system-rtl/loader/linker-script. This is far from certain to be available on all systems, for example deeply embedded systems where code executes on bare metal. I.e. even if __attribute__((constructor))/((destructor)) is supported by GCC, it's not ce...