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MongoDB relationships: embed or reference?
... records will refer to the same data it is more efficient and less error prone to update a single record and keep references to it in other places.
Document size considerations
MongoDB imposes a 4MB (16MB with 1.8) size limit on a single document. In a world of GB of data this sounds small, but it...
What is meant by immutable?
...ns you can pass references to the object around, without worrying that someone else is going to change its contents. Especially when dealing with concurrency, there are no locking issues with objects that never change
e.g.
class Foo
{
private final String myvar;
public Foo(final String ...
How to match “anything up until this sequence of characters” in a regular expression?
...or of regex you're using, but this will
work in any of the most popular ones that can be considered "complete".
/.+?(?=abc)/
How it works
The .+? part is the un-greedy version of .+ (one or more of
anything). When we use .+, the engine will basically match everything.
Then, if there ...
Nearest neighbors in high-dimensional data?
...ps not the nearest neighbor); in doing so, you reduce complexity. You mentioned the kd-tree; that is one example. But as you said, kd-tree works poorly in high dimensions. In fact, all current indexing techniques (based on space partitioning) degrade to linear search for sufficiently high dimensions...
Quick-and-dirty way to ensure only one instance of a shell script is running at a time
What's a quick-and-dirty way to make sure that only one instance of a shell script is running at a given time?
40 Answers
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How can you dynamically create variables via a while loop? [duplicate]
I want to create variables dynamically via a while loop in Python. Does anyone have any creative means of doing this?
8 Ans...
Can an abstract class have a constructor?
...his example, that generally abstract classes have default constructors if none have been explicitly declared
– Vic Seedoubleyew
Aug 11 '16 at 14:24
2
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Understanding ibeacon distancing
...avid. Where does the txPower value come from? Is it a calibration value done on the client (receiving) side? Or is it a metric you can get from a beacon?
– rmooney
Jan 6 '14 at 19:06
...
How does a language expand itself? [closed]
...ke a common API, to (debatably) many different "onion cores". They are the ones providing portability on top of non-portable non-standard backends.
– luk32
Jul 28 '14 at 16:09
81
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Android map v2 zoom to show all the markers
...setting map extent using addOnGlobalLayoutListener here.
Clarification 2
One comment notes that using this method for only one marker results in map zoom set to a "bizarre" zoom level (which I believe to be maximum zoom level available for given location). I think this is expected because:
The L...