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Call an activity method from a fragment
Trying to call a method in my activity from a fragment. I want the fragment to give the method data and to get the data when the method return. I want to achieve similar to call on a static method, but without the use of static because it create problems in the activity.
...
Create Generic method constraining T to an Enum
...e, a better implementation should be something like this:
public T GetEnumFromString<T>(string value) where T : struct, IConvertible
{
if (!typeof(T).IsEnum)
{
throw new ArgumentException("T must be an enumerated type");
}
//...
}
This will still permit passing of value ...
Why does pylint object to single character variable names?
...es() if a.is_proper()] I claim the latter is more clear, as a is obvious from the context. In general, variable length should correlate with scope of the variable.
– EdvardM
Oct 24 '19 at 7:03
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How to calculate moving average without keeping the count and data-total?
...
Beware that this is quite far from the common definition of average. If you set N = 5 and enter 5 5 samples, the average will be 0.67.
– Dan Dascalescu
Jan 9 '18 at 8:28
...
How to get index of object by its property in JavaScript?
... Thanks for explaining @GrayedFox. My reference to greedy was actually from programming too but related to regular expressions where greedy takes more characters than non-greedy! :-)
– Jos
Sep 17 '19 at 12:57
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Find first element in a sequence that matches a predicate
...ed out.
For Python version < 2.6, here's the best I can come up with:
from itertools import repeat,ifilter,chain
chain(ifilter(predicate,seq),repeat(None)).next()
Alternatively if you needed a list later (list handles the StopIteration), or you needed more than just the first but still not al...
Passing data to Master Page in ASP.NET MVC
...s a strongly typed view data class containing its information and deriving from the master pages view data:
public class IndexViewData : MasterViewData
{
public string Name { get; set; }
public float Price { get; set; }
}
Since I don't want individual controllers to know anything about pu...
How to let PHP to create subdomain automatically for each user?
...but there are thousands of tutorials out there. Here is the necessary code from that tutorial:
<VirtualHost 111.22.33.55>
DocumentRoot /www/subdomain
ServerName www.domain.tld
ServerAlias *.domain.tld
</VirtualHost>
However as it required the use of VirtualHosts it must be...
How to install psycopg2 with “pip” on Python?
...
Option 2
Install the prerequsisites for building the psycopg2 package from source:
Debian/Ubuntu
Python 3
sudo apt install libpq-dev python3-dev
You might need to install python3.8-dev or similar for e.g. Python 3.8.
Python 21
sudo apt install libpq-dev python-dev
If that's not enough,...
What is difference between functional and imperative programming languages?
...1 + number2 + number3;
Each statement changes the state of the program, from assigning values to each variable to the final addition of those values. Using a sequence of five statements the program is explicitly told how to add the numbers 5, 10 and 15 together.
Functional languages:
The functio...