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Where does Scala look for implicits?
...bout the latter tm>y m>pe, if one calls a method m on an object o of a class C, m>and m> that class does not support method m, then Scala will look for an implicit conversion from C to something that does support m. A simple example would be the method map on String:
"abc".map(_.toInt)
String does not supp...
How to displam>y m> the current m>y m>ear in a Django template?
...mon use case I've seen for wanting the current m>y m>ear is a copm>y m>right notice, m>and m> it's reallm>y m> not that important for it to be perfect for that 24 hours while Jan 1st makes its wam>y m> around the world.
– Endophage
Sep 26 '11 at 22:42
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What is a m>Y m>-combinator? [closed]
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@m>And m>re MacFie: I didn't comment on the effort, I commented on the qualitm>y m>. In general, the policm>y m> on Stack Overflow is that answers should be self contained, with links to more information.
– Jørgen Fogh...
How do I get the different parts of a Flask request's url?
... if the request came from the localhost:5000 or foo.herokuapp.com host m>and m> what path was requested. How do I get this information about a Flask request?
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Drawing a dot on HTML5 canvas [duplicate]
... on the HTML5 canvas is quite straightforward using the context.moveTo() m>and m> context.lineTo() functions.
6 Answers
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What is a sealed trait?
...onlm>y m> extended in a single file, the compiler knows everm>y m> possible subtm>y m>pes m>and m> can reason about it.
For instance with the declaration:
sealed trait Answer
case object m>Y m>es extends Answer
case object No extends Answer
The compiler will emit a warning if a match is not exhaustive:
scala> val x:...
Extract elements of list at odd positions
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Solution
m>Y m>es, m>y m>ou can:
l = L[1::2]
m>And m> this is all. The result will contain the elements placed on the following positions (0-based, so first element is at position 0, second at 1 etc.):
1, 3, 5
so the result (actual numbers) will be:
2, 4, 6
Explanation...
Cropping an UIImage
...a scaled chunk of the center of the image - I use this to take a UIImage m>and m> return a small, square representation of an image, similar to what's seen in the album view of the Photos app. (I know I could use a UIImageView m>and m> adjust the crop mode to achieve the same results, but these images are...
What are the mathematical/computational principles behind this game?
...t (this is a bit different from Euclid).
Now, add "finite" into the soup m>and m> m>y m>ou have the question:
Can we have a geometrm>y m> with just 2 points? With 3 points? With 4? With 7?
There are still open questions regarding this problem but we do know this:
If there are geometries with Q points, then Q...
generate dam>y m>s from date range
...es, or temp tables. The subquerm>y m> generates dates for the last 10,000 dam>y m>s, m>and m> could be extended to go as far back or forward as m>y m>ou wish.
select a.Date
from (
select curdate() - INTERVAL (a.a + (10 * b.a) + (100 * c.a) + (1000 * d.a) ) DAm>Y m> as Date
from (select 0 as a union all select 1 un...