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Calculate the center point of multiple latitude/longitude coordinate pairs
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I found this post very useful so here is the solution in PHP. I've been using this successfully and just wanted to save another dev some time.
/**
* Get a center latitude,longitude from an array of like geopoints
*
* @param array data 2 dimensional array of latitudes and longit...
Java Desktop application: SWT vs. Swing [closed]
...arison done on SWT/Swing/AWT.
http://www.developer.com/java/other/article.php/10936_2179061_2/Swing-and-SWT-A-Tale-of-Two-Java-GUI-Libraries.htm
And here's the site where you can get tutorial on basically anything on SWT (http://www.java2s.com/Tutorial/Java/0280__SWT/Catalog0280__SWT.htm)
Hope yo...
What is the fundamental difference between WebSockets and pure TCP?
...S-encrypted connections), which is of benefit for those environments which block non-web Internet connections using a firewall.
Would you like to use existed TCP port or open a new TCP port that might be blocked by firewall?
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Difference between using Throwable and Exception in a try catch
.... So by catching Throwable you can be sure that you'll never leave the try block without at least going through your catch block, but you should be prepared to also handle OutOfMemoryError and InternalError or StackOverflowError.
Catching Throwable is most useful for outer server loops that delegat...
Calling Python in Java?
... many ways in which this can go sour. So make sure you get each thing done block by block. Then put them together.
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Is AsyncTask really conceptually flawed or am I just missing something?
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true -- but what if the task blocks indefinitely? Tasks are meant to perform blocking operations, maybe even ones that never terminate. There you have your memory leak.
– Matthias
Jul 29 '10 at 7:29
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Set Django IntegerField by choices=… name
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class Language(ChoiceEnum):
Python = 1
Ruby = 2
Java = 3
PHP = 4
Cpp = 5
# Uh oh
Language.Cpp._name_ = 'C++'
This is pretty much all. You can inherit the ChoiceEnum to create your own definitions and use them in a model definition like:
from django.db import models
from mya...
How to open a file using the open with statement
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Use nested blocks like this,
with open(newfile, 'w') as outfile:
with open(oldfile, 'r', encoding='utf-8') as infile:
# your logic goes right here
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Storing R.drawable IDs in XML array
...way could be this:
fun Int.resDrawableArray(context: Context, index: Int, block: (drawableResId: Int) -> Unit) {
val array = context.resources.obtainTypedArray(this)
block(array.getResourceId(index, -1))
array.recycle()
}
R.array.random_imgs.resDrawableArray(context, 0) {
mImgView1.setI...
Is leaked memory freed up when the program exits?
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Usually, yes. Some systems support things like shared memory blocks that aren't automatically freed when a program exits though. Most still keep a reference count and delete it when all the programs that opened it exit, but a few don't (e.g., 16-bit Windows had a few types of items tha...