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Which data type for latitude and longitude?
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If you do not need all the functionality PostGIS offers, Postgres (nowadays) offers an extension module called earthdistance. It uses the point or cube data type depending on your accuracy needs for distance calculations.
You can now use the earth_box function to -for example- query for poi...
Neo4j - Cypher vs Gremlin query language
... 100-200 times faster. We did so and got easily factor 60 out of it. As of now we have no single Cypher query in our system due to lack of confidence. Easy Cypher queries are easy to write in Java, complex queries won't perform. The problem is when you have multiple conditions in your query there is...
When should I use the new keyword in C++?
... the heap, by calling new.
(And that's where any similarity to C# stops)
Now, anything allocated on the stack has "automatic" storage duration (you can actually declare a variable as auto, but this is the default if no other storage type is specified so the keyword isn't really used in practice, b...
Why are ToLookup and GroupBy different?
...different. Calling ToLookup means I want a cache of the entire thing right now organized by group. Calling GroupBy means "I am building an object to represent the question 'what would these things look like if I organized them by group?'"
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What exactly does big Ө notation represent?
...4 is playing a role of x here so,
Replacing n4 with x'so, Big O(x') = 2x', Now we both are happy General Concept is
So 0 ≤ f(n) ≤ O(x')
O(x') = cg(n) = 3n4
Putting Value,
0 ≤ 2n4 + 100n2 + 10n + 50 ≤ 3n4
3n4 is our Upper Bound
Theta(n) Provides Lower Bound
Theta(n4) = cg(n) = 2n4 Because 2n4...
How do I ignore the initial load when watching model changes in AngularJS?
...ner'. I am using this watch to detect if the page/entity is "dirty". Right now I'm making the save button bounce but really I want to make the save button invisible until the user dirties the model.
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How do I put all required JAR files in a library folder inside the final JAR file with Maven?
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it is more clear for me now. let me make a google search. But I would like to know why you want to copy all dependency jar file in specified folder inside the executable jar file. If all dependency jar files are inside the jar file, why do you need ...
Posting a File and Associated Data to a RESTful WebService preferably as JSON
... wanting to use JSON for the request and if that was possible. I already know that I could send it the way you suggest.
– Gregg
Nov 3 '10 at 3:05
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How to get a index value from foreach loop in jstl
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I need to know the index[location] of each element comes in the String Array.
– Java Questions
Sep 16 '13 at 11:10
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Can a C# class inherit attributes from its interface?
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very nice, I personally use a shorter version of this, now: private static IEnumerable<T> GetCustomAttributesIncludingBaseInterfaces<T>(this Type type) { var attributeType = typeof(T); return type.GetCustomAttributes(attributeType, true).Union(type.Ge...