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Why does pthread_cond_wait have spurious wakeups?
...s example is very realistic and I agree that checking predicates is a good idea. However, couldn't it be fixed equally soundly by taking the problematic step "thread 1 completes its current task, and returns to the queue for more work" and replacing it with "thread 1 completes its current task, and ...
What is the difference between a strongly typed language and a statically typed language?
...e C. C is the one of the best examples of weakly typed. The runtime has no idea if 4 bytes is an integer, a struct, a pointer or a 4 c
How to style a checkbox using CSS
...don`t see the reason to write such a big example. 30 lines to describe the idea would be enough.
– Andrii Bogachenko
Feb 15 '17 at 12:46
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Select first row in each GROUP BY group?
...ut anyway. The benefit shrinks with a growing number of rows per customer.
Ideally, you have enough work_mem to process the involved sort step in RAM and not spill to disk. But generally setting work_mem too high can have adverse effects. Consider SET LOCAL for exceptionally big queries. Find how mu...
How to upload files to server using JSP/Servlet?
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@BalusC I created a post related to this, do you have an idea how I could retrieve extra infos from File API webKitDirectory. More details here stackoverflow.com/questions/45419598/…
– Rapster
Jul 31 '17 at 23:52
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Timer function to provide time in nano seconds using C++
...ock is likely to have inaccurate conversions to other units. It is a good idea to set your measurements up so that you can easily change and compare clocks (as shown in this answer).
– Howard Hinnant
Apr 25 '16 at 14:23
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std::function and std::bind: what are they, and when should they be used?
...brary feature.
std::function objects are polymorphic functions. The basic idea is to be able to refer to all the callable objects interchangeably.
I would point you to these two links for further details:
Lambda functions in C++11:
http://www.nullptr.me/2011/10/12/c11-lambda-having-fun-with-brack...
How do I get Windows to go as fast as Linux for compiling C++?
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A few ideas:
Disable 8.3 names. This can be a big factor on drives with a large number of files and a relatively small number of folders: fsutil behavior set disable8dot3 1
Use more folders. In my experience, NTFS starts to slow ...
Difference between Big-O and Little-O Notation
...d ≤ 1
not ≤ 0, < 0, or < 1
Here's a table, showing the general idea:
(Note: the table is a good guide but its limit definition should be in terms of the superior limit instead of the normal limit. For example, 3 + (n mod 2) oscillates between 3 and 4 forever. It's in O(1) despite not...
MongoDB Many-to-Many Association
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This doesn't seem like a good idea. If you only have six roles, sure, but what if you had 20000 objects that could be linked to 20000 more objects (in a many-many relationship)? Even the MongoDB docs hint that you should avoid having mutable, huge arrays ...