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Fastest Way to Find Distance Between Two Lat/Long Points
...have just under a million locations in a mysql database all with longitude and latitude information.
15 Answers
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How to “properly” create a custom object in JavaScript?
...ut what the best way is to create an JavaScript object that has properties and methods.
15 Answers
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Django migration strategy for renaming a model and relationship fields
...ome errors if you don't update the names where it's imported e.g. admin.py and even older migration files (!).
Update: As ceasaro mentions, newer versions of Django are usually able to detect and ask if a model is renamed. So try manage.py makemigrations first and then check the migration file.
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Download large file in python with requests
...t's not possible to keep whole file in memory I need to read it in chunks. And this is a problem with the following code
5 ...
How do I update the GUI from another thread?
...ET 2.0, here's a nice bit of code I wrote that does exactly what you want, and works for any property on a Control:
private delegate void SetControlPropertyThreadSafeDelegate(
Control control,
string propertyName,
object propertyValue);
public static void SetControlPropertyThreadSafe...
How do I properly escape quotes inside HTML attributes?
... answered Oct 25 '10 at 14:11
Andy EAndy E
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Accessing members of items in a JSONArray with Java
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Have you tried using JSONArray.getJSONObject(int), and JSONArray.length() to create your for-loop:
for (int i = 0; i < recs.length(); ++i) {
JSONObject rec = recs.getJSONObject(i);
int id = rec.getInt("id");
String loc = rec.getString("loc");
// ...
}
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Best place to insert the Google Analytics code [duplicate]
...ws recorded at some small margin. It's a tradeoff. ga.js is heavily cached and present on a large percentage of sites across the web, so its often served from the cache, reducing latency to almost nil.
As a matter of personal preference, I like to include it in the <head>, but its really a m...
What happens when there's insufficient memory to throw an OutOfMemoryError?
I am aware that every object requires heap memory and every primitive/reference on the stack requires stack memory.
11 Answ...
What is the C# equivalent of NaN or IsNumeric?
...s a number
} else {
// it is not a number
}
Incidentally, all of the standard data types, with the glaring exception of GUIDs, support TryParse.
update
secretwep brought up that the value "2345," will pass the above test as a number. However, if you need to ensure that all of the characters wi...