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In Firebase, is there a way to get the number of children of a node without loading all the node dat
...nt of unique votes and counts which keeps coming up!. But this time I have tested my suggestion! (notwithstanding cut/paste errors!).
The 'trick' here is to use the node priority to as the vote count...
The data is:
vote/$issueBeingVotedOn/user/$uniqueIdOfVoter = thisVotesCount, priority=thisVote...
Check if value already exists within list of dictionaries?
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Is there a possibility to test if 'main_color': 'red' AND 'second_color':'blue' exist ?
– Florent
May 7 '18 at 23:19
1
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Purpose of asterisk before a CSS property
...ies and will in
fact ignore leading non-alphanumeric characters. From my testing this
appears to be the case from at least IE5 onwards.
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How to get the PATH environment-variable separator in Python?
... your working directory/specific folder -
import os
my = os.path.sep+ "testImages" + os.path.sep + "imageHidden.png"
print(my)
Output for Linux-
/home/*******/Desktop/folder/PlayWithPy/src/testImages/imageHidden.png
Output for Windows-
C:\\Users\\Administrator\\Desktop\\folder\\tests\\te...
how to “reimport” module to python then code be changed after import
...d_ext autoreload
In []: %autoreload 2
Then import the module you want to test:
In []: import foo
In []: foo.some_function()
Out[]: 42
Open foo.py in an editor and change some_function to return 43
In []: foo.some_function()
Out[]: 43
It also works if you import the function directly.
In []...
__lt__ instead of __cmp__
...ptions can let you optimize as needed, while still quickly prototyping and testing. Neither one tells me why it's removed. (Essentially it boils down to developer efficiency for me.) Is it possible the rich comparisons are less efficient with the cmp fallback in place? That wouldn't make sense to me...
Loadbalancing web sockets
...a given (source) IP address. It does not apply to incoming TCP/IP. We have tested Autobahn (a high-performance WebSocket server) with 200k active connections on a 2 core, 4GB RAM VM.
Also note that you can do L7 load-balancing on the HTTP path announced during the initial WebSocket handshake. In th...
TFS Get Specific Version into separate folder
...older version of the code, and I need to pull down that version of code to test it out. My first thought would be to "Get Specific Version" to pull down the code, but I'd rather not get that version into my current workspace directory.
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Changing three.js background to transparent or other color
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A full answer: (Tested with r71)
To set a background color use:
renderer.setClearColor( 0xffffff ); // white background - replace ffffff with any hex color
If you want a transparent background you will have to enable alpha in your render...
In C#, how can I create a TextReader object from a string (without writing to disk)
...
You want a StringReader
var val = "test string";
var textReader = new StringReader(val);
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