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Map Tiling Algorithm
...low the edge tiles marked with an X are all green tiles with a tan tile as one or more of their eight neighbouring tiles. With different types of terrain this condition could translate to a tile being an edge tile if it has neighbours of lower terrain-number.
Once all edge tiles are detected the ...
How to convert a char to a String?
I have a char and I need a String . How do I convert from one to the other?
12 Answers
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JavaScript: What are .extend and .prototype used for?
...end the prototypes of objects such as Date, Math, and even your own custom ones.
Date.prototype.lol = function() {
alert('hi');
};
( new Date ).lol() // alert message
In the snippet above, I define a method for all Date objects ( already existing ones and all new ones ).
extend is usually a h...
MVC4 StyleBundle not resolving images
...o absolute paths within a virtual directory, so this may not work for everyone (?).
bundles.Add(new StyleBundle("~/Content/css/jquery-ui/bundle")
.Include("~/Content/css/jquery-ui/*.css",
new CssRewriteUrlTransform()));
...
Does Java have a complete enum for HTTP response codes?
...
I don't think there's one that's complete in the standard Java classes; HttpURLConnection is missing quite a few codes, like HTTP 100/Continue.
There's a complete list in the Apache HttpComponents, though:
org.apache.http.HttpStatus (replaced o...
What is the difference between ArrayList.clear() and ArrayList.removeAll()?
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The source is strong in this one. (To all other answers: Use the source, Luke.) Notice how clear() could be implemented as just the one line, size=0; but garbage-collection wouldn't know to collect the elements in the unreachable portions of the array...
How do I convert an interval into a number of hours with postgres?
...s interval, and extract result is integer, not float). So. Autocast/Floor done.
– Offenso
Aug 12 '15 at 13:24
19
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Why use a prime number in hashCode?
... inserted into will only be determined by the least significant entry (the one not multiplied at all). Similar entries will collide. Not good for a hash function.
31 is a large enough prime that the number of buckets is unlikely to be divisible by it (and in fact, modern java HashMap implementation...
When and why are database joins expensive?
...d water.
Chris Date, who in company with Dr Ted Codd was the original proponent of the relational data model, ran out of patience with misinformed arguments against normalisation and systematically demolished them using scientific method: he got large databases and tested these assertions.
I thin...
Why is there no String.Empty in Java?
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I'll still +1 you, but I feel dirty because you mentioned StringBuilder without talking about how nine times out of ten it's totally inappropriate to use StringBuilder rather than concatenation.
– Randolpho
Aug 10 '10 at 15:36
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