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When should we use intern method of String on String literals
...onstant pool.
Refer to JavaTechniques "String Equality and Interning" for more information.
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What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?
...en the map phase is faster).
UPDATE: Since you are looking for something more official, you can also read Tom White's book "Hadoop: The Definitive Guide". Here is the interesting part for your question.
Tom White has been an Apache Hadoop committer since February 2007, and is a member of the Apac...
Include constant in string without concatenating
...is whole thread I went with YOUR particular solution. I wish I could +1 it more than once.
– hndcrftd
Mar 13 '14 at 23:30
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Enabling markdown highlighting in Vim
...s specific highlight exists because Markdown treats lines ending with 2 or more space characters specially by inserting a <br>, so it is useful.
The plasticboy plugin uses TODO highlighting for this rule, which is a bit too much as it's designed to, by default, be really garish - yellow backg...
Rails DB Migration - How To Drop a Table?
...ion here:
http://api.rubyonrails.org/classes/ActiveRecord/Migration.html
More specifically, you can see how to drop a table using the following approach:
drop_table :table_name
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What's the advantage of Logic-less template (such as mustache)?
...t yourself if you use a knife. This is very true, and yet you will be far more productive if you use the latter, albeit carefully.
For instance, consider the following template snippet using mustache:
{{name}}:
<ul>
{{#items}}
<li>{{.}}</li>
{{/items}}
</ul>
I ca...
What is the explicit promise construction antipattern and how do I avoid it?
... // much nicer, right?
}
Promises are all about making asynchronous code more readable and behave like synchronous code without hiding that fact. Promises represent an abstraction over a value of one time operation, they abstract the notion of a statement or expression in a programming language.
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What's the most efficient test of whether a PHP string ends with another string?
...rumley's answer is cool, but it should use '===' instead of '=='. '===' is more strict and usually does what you want, while '==' can lead to nasty surprises. mcrumley's third code snippet is correct, but the first two aren't. substr_compare() returns false in some error cases. In PHP, false == 0, s...
In Java, is there a way to write a string literal without having to escape quotes?
...nce penalty is practically nonexistent, and it makes the code considerably more legible.
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How to determine if a type implements an interface with C# reflection
...is because GetInterfaces caches it's results so the first invocation costs more
– Panos Theof
Oct 11 '13 at 11:23
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