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In STL maps, is it better to use map::insert than []?
A while ago, I had a discussion with a colleague about how to insert values in STL maps . I preferred map[key] = value; because it feels natural and is clear to read whereas he preferred map.insert(std::make_pair(key, value)) .
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What is the difference between \r and \n?
How are \r and \n different? I think it has something to do with Unix vs. Windows vs. Mac, but I'm not sure exactly how they're different, and which to search for/match in regexes.
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Which is the preferred way to concatenate a string in Python?
...appending a string to a string variable is to use + or +=. This is because it's readable and fast. They are also just as fast, which one you choose is a matter of taste, the latter one is the most common. Here are timings with the timeit module:
a = a + b:
0.11338996887207031
a += b:
0.110404968261...
Why do we declare Loggers static final?
In Java, why is it best practice to declare a logger static final ?
14 Answers
14
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Pointers vs. values in parameters and return values
... channels, strings, function values, and interface values are implemented with pointers internally, and a pointer to them is often redundant.
Elsewhere, use pointers for big structs or structs you'll have to change, and otherwise pass values, because getting things changed by surprise via a pointer ...
How can I add a PHP page to WordPress?
...reate a custom page for my WordPress blog that will execute my PHP code in it, whilst remaining a part of the overall site CSS/theme/design.
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How do I format a long integer as a string without separator in Java?
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edited Jan 22 '16 at 20:19
RAnders00
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How to stop Jenkins installed on Mac Snow Leopard?
I have installed Jenkins executable on OSX, but now I want to stop it running. Whenever I kill it, no matter how, it just restarts immediately.
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How do I use boolean variables in Perl?
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In Perl, the following evaluate to false in conditionals:
0
'0'
undef
'' # Empty scalar
() # Empty list
('')
The rest are true. There are no barewords for true or false.
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How to Sort Multi-dimensional Array by Value?
...unction($a, $b) {
return $a['order'] - $b['order'];
});
And finally with PHP 7 you can use the spaceship operator:
usort($myArray, function($a, $b) {
return $a['order'] <=> $b['order'];
});
To extend this to multi-dimensional sorting, reference the second/third sorting elements if...