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Understanding ibeacon distancing
...ssi) over the calibrated transmitter power (txPower). The txPower is the known measured signal strength in rssi at 1 meter away. Each beacon must be calibrated with this txPower value to allow accurate distance estimates.
While the distance estimates are useful, they are not perfect, and require ...
How to find and return a duplicate value in array
...
a = ["A", "B", "C", "B", "A"]
a.detect{ |e| a.count(e) > 1 }
I know this isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set.
Looking for faster solution? Here you go!
def find_one_using_hash_map(arr...
Django: Get list of model fields?
...s such as a reverse ForeignKey and those are not exactly "fields". Anyone know how to distinguish the actual Fields?
– viridis
Jun 4 '13 at 13:56
2
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How to reverse apply a stash?
...y git stash. I've applied it to my working copy using git stash apply . Now, I'd like to back out those changes by reverse applying the patch (kind of like what git revert would do but against the stash).
...
How to write a multidimensional array to a text file?
...8.00 199.00
# New slice
Reading it back in is very easy, as long as we know the shape of the original array. We can just do numpy.loadtxt('test.txt').reshape((4,5,10)). As an example (You can do this in one line, I'm just being verbose to clarify things):
# Read the array from disk
new_data = np...
Why does git revert complain about a missing -m option?
...you want to throw away the merge commit:
$ git reset --hard HEAD^
HEAD is now at b7e7176 baz
$ git lola
* b7e7176 (HEAD, master) baz
| * c7256de (otherguy) bar
|/
* 9968f79 foo
As documented in the git rev-parse manual
<rev>^, e.g. HEAD^, v1.5.1^0
A suffix ^ to a revision parameter ...
What are the most-used vim commands/keypresses?
... I've never seen this before, very cool reference for after you know what the commands do.
– amccormack
Mar 23 '11 at 4:27
3
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What does glLoadIdentity() do in OpenGL?
... with all of the random functions that I have in my code. They work and I know when to use them, but I don't know why I need them or what they actually do.
...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
...mit configuration (in order to influence the outcome of the enforcement.)
Now, in order to actually move forward I'd say you're left with two options:
switch to a larger instance, or
put some coding effort into more effectively controlling your script's memory footprint
NOTE that the coding eff...
The Guava library: What are its most useful and/or hidden features? [closed]
...
Note that we now have StandardCharsets in Java 7+. I wonder how many other of Guava's features have found their way into Java.
– DavidS
Mar 22 '16 at 23:32
...