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What is the point of Lookup?
...ictionary, which doesn't care that two keys correspond to the same value.
Now you want a way of looking up who a given phone number belongs to. You build a Lookup, adding all the KeyValuePairs from your Dictionary, but backwards, with the value as the key and the key as the value. You can now query...
Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
...ve to use its "utf8mb4" encoding. But people are much more likely to not know that and go with "utf8", and much more likely to want UTF-8 than any other encoding, so, presto, they wind up with a maximum indexable length of 255 characters in a VARCHAR. Your astoundment notwithstanding.
...
Adding an arbitrary line to a matplotlib plot in ipython notebook
.... What about diagonal lines? I edited the question to add the diagonal bit now that you've shown me the h & v lines.
– JD Long
Oct 12 '12 at 17:51
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PHP & mySQL: Year 2038 Bug: What is it? How to solve it?
...re.
What exactly is the Year 2038 problem?
"The year 2038 problem (also known as Unix Millennium Bug, Y2K38 by analogy to the Y2K problem) may cause some computer software to fail before or in the year 2038. The problem affects all software and systems that store system time as a signed 32-bit int...
Junit: splitting integration test and Unit tests
...y (and Junit 3 legacy) but I'm looking to transition to annotations myself now I'm on Junit 4.
I wouldn't be overly concerned about developers putting integration tests in your unit test classes - add a rule in your coding standards if necessary.
I'm interested to know what sort of other solutions...
Multiple inheritance/prototypes in JavaScript
...Update (2019): The original post is getting pretty outdated. This article (now internet archive link, since domain went away) and its associated GitHub library are a good modern approach.
Original post:
Multiple inheritance [edit, not proper inheritance of type, but of properties; mixins] in Javasc...
Benefits of prototypal inheritance over classical?
...
I know that this answer is 3 years late but I really think the current answers do not provide enough information about how prototypal inheritance is better than classical inheritance.
First let's see the most common arguments J...
Make HTML5 video poster be same size as video itself
Does anyone know how to resize the HTML5 video poster such that it fits the exact dimensions of the video itself?
13 Answer...
How to make a HTML Page in A4 paper size page(s)?
...ng and will already be able to display a website based on the print CSS.
Now, you'll want to make the web display look a bit different and adapt the whole design to fit most browsers too (including the old, pre 2005 ones). For that, you'll have to create a web CSS file or override some parts of yo...
Mapping many-to-many association table with extra column(s)
...= other.getId())
return false;
return true;
}
}
Now, we have to create the association table. The first step is to create an object representing a complex primary key (a.id, c.id).
public class ACId implements Serializable{
private A a;
private C c;
public A...