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How does push notification technology work on Android?
How has Google implemented their push notification feature? Does it work through polling done by a service running in the background or in a different way?
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cartesian product in pandas
... 1 3 6
2 2 4 5
3 2 4 6
See here for the documentation: http://pandas.pydata.org/pandas-docs/stable/merging.html#brief-primer-on-merge-methods-relational-algebra
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UltiSnips and YouCompleteMe
...ps and youcompleteme installed on my macvim.
The problem is that ultisnips doesn't work because tab is bound by ycm.
I tried putting let g:UltiSnipsExpandTrigger = "<s-tab>" so that I can trigger the snippet completion with shift-tab, but it doesn't work for some unknown reason. I could use ...
Struggling with NSNumberFormatter in Swift for currency
...5.55" = "$5.55"
"5.234234" = "5.23"
Please use the following:
func cleanDollars(_ value: String?) -> String {
guard value != nil else { return "$0.00" }
let doubleValue = Double(value!) ?? 0.0
let formatter = NumberFormatter()
formatter.currencyCode = "USD"
formatter.curren...
How can I lock a file using java (if possible)
...e, or at least notify that second process that the file is already opened? Does this automatically make the second process get an exception if the file is open (which solves my problem) or do I have to explicitly open it in the first process with some sort of flag or argument?
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How can I check file size in Python?
I am writing a Python script in Windows. I want to do something based on the file size. For example, if the size is greater than 0, I will send an email to somebody, otherwise continue to other things.
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Pickle incompatibility of numpy arrays between Python 2 and 3
... a bug in the Python 3 unpickler, or a "misuse" of the pickler by numpy, I don't know.
Here is something of a workaround, but I don't know how meaningful the data is at this point:
import pickle
import gzip
import numpy
with open('mnist.pkl', 'rb') as f:
u = pickle._Unpickler(f)
u.encodin...
Swift - Split string over multiple lines
...his is some text
over multiple lines
"""
Older versions of Swift don't allow you to have a single literal over multiple lines but you can add literals together over multiple lines:
var text = "This is some text\n"
+ "over multiple lines\n"
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Can Protractor and Karma be used together?
If Protractor is replacing Angular Scenario Runner for E2E testing, does that mean I will still be able to use it with Karma as my E2E testing framework ?
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What is the best way to convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?
...g(@"hh\:mm\:ss\:fff");
or if you want date time format then you can also do this
TimeSpan time = TimeSpan.FromSeconds(seconds);
DateTime dateTime = DateTime.Today.Add(time);
string displayTime = dateTime.ToString("hh:mm:tt");
For more you can check Custom TimeSpan Format Strings
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