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Is it Pythonic to use list comprehensions for just side effects?
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It is very anti-Pythonic to do so, and any seasoned Pythonista will give you hell over it. The intermediate list is thrown away after it is created, and it could potentially be very, very large, and therefore expensive to create.
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Logging best practices [closed]
...tp://essentialdiagnostics.codeplex.com/)
Frameworks
Q: What frameworks do you use?
A: System.Diagnostics.TraceSource, built in to .NET 2.0.
It provides powerful, flexible, high performance logging for applications, however many developers are not aware of its capabilities and do not make full...
Python: changing value in a tuple
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First you need to ask, why you want to do this?
But it's possible via:
t = ('275', '54000', '0.0', '5000.0', '0.0')
lst = list(t)
lst[0] = '300'
t = tuple(lst)
But if you're going to need to change things, you probably are better off keeping it as a list
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How do I assert an Iterable contains elements with a certain property?
...ght direction. I was able to get it in one line and I successfully hunted down the imports for Hamcrest 1.3.
the imports:
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.Matchers.contains;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.beans...
In a storyboard, how do I make a custom cell for use with multiple controllers?
...on the scene the cell is in.
Unfortunately, there is currently no way to do this. To understand why your previous attempts didn't work, you need to understand more about how storyboards and prototype table view cells work. (If you don't care about why these other attempts didn't work, feel free to...
Angular HttpPromise: difference between `success`/`error` methods and `then`'s arguments
According to AngularJS doc , calls to $http return the following:
6 Answers
6
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Are foreign keys really necessary in a database design?
...er to manipulate data in the correct way. Suppose a programmer is actually doing this in the right manner already, then do we really need the concept of foreign keys?
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How do I get the value of a textbox using jQuery?
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Why does '.value()' not work in jQuery? I wouldn't have searched Google if it did, because this is what I tried intuitively. Why choose to shorten it two chars...
– Mike de Klerk
Jul 26 '15 ...
Adding a column to an existing table in a Rails migration
...w migration (rails generate migration add_email_to_users email:string will do the trick).
It will create a migration file containing line:
add_column :users, email, string
Then do a rake db:migrate and it'll run the new migration, creating the new column.
If you have not yet run the original migrat...
How to do multiple arguments to map function where one remains the same in python?
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The docs explicitly suggest this is the main use for itertools.repeat:
Make an iterator that returns object over and over again. Runs indefinitely unless the times argument is specified. Used as argument to map() for invarian...