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What is a columnar database?
... an additional indication that such an approach for DBMSes strays from the more "natural" (and certainly more broadly used) approach to storing record entities. As a result, this approach is used when the row-oriented approach isn't satisfactory, and therefore and tends to
a) be targeted for a pa...
Java Regex Capturing Groups
...ut:
group 1: This order was placed for QT
group 2: 3000
group 3: ! OK?
More info on Java Pattern here.
Finally, the capturing groups are delimited by round brackets, and provide a very useful way to use back-references (amongst other things), once your Pattern is matched to the input.
In Jav...
How to check if an object is nullable?
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How can I echo HTML in PHP?
...er template engines (such as Smarty, Twig, etc.) that make the syntax even more concise (e.g. {{someVariable}}).
The primary benefit of using a template engine is keeping the design (presentation logic) separate from the coding (business logic). It also makes the code cleaner and easier to maintain ...
Get Maven artifact version at runtime
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Why do python lists have pop() but not push()
...ead code that uses
the other one, so you need to learn
both, which is more cognitive load.
You can also see he discusses the idea of if push/pop/put/pull should be at element [0] or after element [-1] where he posts a reference to Icon's list:
I stil think that all this is best
left out...
Is there any advantage of using map over unordered_map in case of trivial keys?
... hence, I've got no problems with the definition of the hash function. The more I thought about it, the more I came to realize that I can't find any reason of using a std::map over a std::unordered_map in the case of keys with simple types -- I took a look at the interfaces, and didn't find any ...
Wrapping StopWatch timing with a delegate or lambda?
... @Jay I agree that "foreach" with Enumerable.Range looks a bit more "modern", but my tests show that it's about four times slower than a "for" loop over a large count. YMMV.
– Matt Hamilton
Oct 25 '08 at 23:16
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Is nested function a good approach when required by only one function? [closed]
...y the concept -- in actual use what do_it() does would presumably be a bit more complicated than what can be handled by some arithmetic in a single return statement.
– martineau
Sep 2 '14 at 13:07
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