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Why main does not return 0 here?
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Or you can just add return 0; before the closing }. It's harmless and makes your program portable to older compilers.
– Keith Thompson
Dec 30 '11 at 8:46
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What is the purpose of shuffling and sorting phase in the reducer in Map Reduce Programming?
In Map Reduce programming the reduce phase has shuffling, sorting and reduce as its sub-parts. Sorting is a costly affair.
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When do you use the Bridge Pattern? How is it different from Adapter pattern?
Has anyone ever used the Bridge Pattern in a real world application? If so, how did you use it? Is it me, or is it just the Adaptor Pattern with a little dependency injection thrown into the mix? Does it really deserve its own pattern?
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Make anchor link go some pixels above where it's linked to
I'm not sure the best way to ask/search for this question:
21 Answers
21
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Does application.yml support environment variables?
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Try ${OPENSHIFT_DIY_PORT} (the usual Spring placeholder notation). See here for docs.
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How to sort a HashSet?
For lists, we use the Collections.sort(List) method. What if we want to sort a HashSet ?
19 Answers
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?: operator (the 'Elvis operator') in PHP
...docode,
foo = bar ?: baz;
roughly resolves to
foo = bar ? bar : baz;
or
if (bar) {
foo = bar;
} else {
foo = baz;
}
with the difference that bar will only be evaluated once.
You can also use this to do a "self-check" of foo as demonstrated in the code example you posted:
foo = foo...
How to set Java environment path in Ubuntu
...penjdk-6-jdk command,
after the installation where's the Java bin directory located? And how can I set the environment path for that directory? I have little experience with Ubuntu, can anyone give some advice or suggest any good website for reference?
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WebRTC vs Websockets: If WebRTC can do Video, Audio, and Data, why do I need Websockets? [closed]
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WebRTC is designed for high-performance, high quality communication of video, audio and arbitrary data. In other words, for apps exactly like what you describe.
WebRTC apps need a service via which they can exchange network and media metadata,...
Are Databases and Functional Programming at odds?
I've been a web developer for some time now, and have recently started learning some functional programming. Like others, I've had some significant trouble apply many of these concepts to my professional work. For me, the primary reason for this is I see a conflict between between FP's goal of rem...