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Preferred method to store PHP arrays (json_encode vs serialize)
...;=5.4 you can implement JsonSerializable to change this behavior).
JSON is more portable
And there's probably a few other differences I can't think of at the moment.
A simple speed test to compare the two
<?php
ini_set('display_errors', 1);
error_reporting(E_ALL);
// Make a big, honkin test...
How to test multiple variables against a value?
...long as the size of the tuple is around 4-8 elements. If you have to scan more than that, use a set, but if you are looking for an item out of 2-4 possibilities, a tuple is still faster! If you can arrange for the most likely case to be first in the tuple, the win is even bigger: (my test: timeit....
What does it mean to hydrate an object?
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With respect to the more generic term hydrate
Hydrating an object is taking an object that exists in memory, that doesn't yet contain any domain data ("real" data), and then populating it with domain data (such as from a database, from the netw...
ICollection Vs List in Entity Framework
...d be a HashSet<T>, for example. (This is a mindset you could use for more than just Entity Framework, by the way. A good object-oriented practice is to program towards the interface and not the implementation. Implementations can and will change.)
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Scala list concatenation, ::: vs ++
... it good that one has both List idiomatic operations (like :: and :::) and more general operation that are common to other collections. I wouldn't drop either operation from the language.
– Giorgio
Oct 29 '12 at 11:00
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Advantage of switch over if-else statement
...d the difficulty of generating switch case chains, that mapping may become more important. (and yes, ancient comment, but the web is forever, or at least until next tuesday)
– Yakk - Adam Nevraumont
Apr 25 '13 at 15:32
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Should functions return null or an empty object?
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What does android:layout_weight mean?
I don't understand how to use this attribute. Can anyone tell me more about it?
13 Answers
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Regex lookahead for 'not followed by' in grep
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Negative lookahead, which is what you're after, requires a more powerful tool than the standard grep. You need a PCRE-enabled grep.
If you have GNU grep, the current version supports options -P or --perl-regexp and you can then use the regex you wanted.
If you don't have (a suffic...
When and why would you seal a class?
...s security features, so that the original object cannot be "impersonated".
More generally, I recently exchanged with a person at Microsoft, who told me they tried to limit the inheritance to the places where it really made full sense, because it becomes expensive performance-wise if left untreated. ...