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SQlite Getting nearest locations (with latitude and longitude)
... west, east and south of your central point in your java code and then check easily by less than and more than SQL operators (>, <) to determine if your points in database are in that rectangle or not.
The method calculateDerivedPosition(...) calculates those points for you (p1, p2, p3, p4 in...
Recommended date format for REST GET API
What's the recommended timestamp format for a REST GET API like this:
5 Answers
5
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Repeat string to certain length
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Looks like this is taking advantage of integer division. Doesn't that need to be // in Python 3? Or dropping the +1 and using an explicit call to a ceiling function would suffice. Also, a note: the string generated actually has ...
How to completely uninstall Android Studio on Mac?
I recently downloaded Android Studio on my Macbook Pro and I messed up with it every time I open it. It gives me plugin errors and several other errors. I need to uninstall it completely from my mac. I tried to delete it from my mac and then install it again as if you would do the first time, but it...
Performance difference between IIf() and If
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VB has the following If statement which the question refers to, I think:
' Usage 1
Dim result = If(a > 5, "World", "Hello")
' Usage 2
Dim foo = If(result, "Alternative")
The first is basically C#'s ternary conditional operator and the second is its coalesce operator (return result unless ...
Java equivalent to #region in C#
...e types involved (constructors, imports etc.), but there's nothing quite like #region.
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What is a memory fence?
...performance gains modern CPUs often execute instructions out of order to make maximum use of the available silicon (including memory read/writes). Because the hardware enforces instructions integrity you never notice this in a single thread of execution. However for multiple threads or environments ...
How to use double or single brackets, parentheses, curly braces
I am confused by the usage of brackets, parentheses, curly braces in Bash, as well as the difference between their double or single forms. Is there a clear explanation?
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Simple state machine example in C#?
...h as performing a switch statement on the current state and command, or looking up transitions in a transition table. For this simple state machine, I prefer a transition table, which is very easy to represent using a Dictionary:
using System;
using System.Collections.Generic;
namespace Juliet
{
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SQL Data Reader - handling Null column values
I'm using a SQLdatareader to build POCOs from a database. The code works except when it encounters a null value in the database. For example, if the FirstName column in the database contains a null value, an exception is thrown.
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