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Django 1.7 - makemigrations not detecting changes
... may happen due to the following reasons:
You did not add the app in INSTALLED_APPS list in settings.py
(You have to add either the app name or the dotted path to the subclass of AppConfig in apps.py in the app folder, depending on the version of django you are using). Refer documentation: INST...
Frequency table for a single variable
... employrate, Length: 139, dtype: float64
putting classification we put all values with a certain range ie.
0-10 as 1,
11-20 as 2
21-30 as 3, and so forth.
gm["employrate"]=gm["employrate"].str.strip().dropna()
gm["employrate"]=pd.to_numeric(gm["employrate"])
gm['employrate'] = np.where(
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Why does the expression 0 < 0 == 0 return False in Python?
...o say 0 < x <= 5 than to say (0 < x) and (x <= 5).
These are called chained comparisons. And that's a link to the documentation for them.
With the other cases you talk about, the parenthesis force one relational operator to be applied before the other, and so they are no longer chained...
Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:
...n't have the sendgrid addon and my smtp hasn't configured. Many thanks for all your backup!
– benoitr
Nov 7 '10 at 16:13
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Ruby: kind_of? vs. instance_of? vs. is_a?
...metimes. Think @honda.kind_of? Car and @person.is_a? Administrator, Ruby's all about the aesthetics. In fact, notice the grammatical error... with active support you can write @person.is_an? Administrator :)... That might have made it into Ruby core by now, actually.
– rfunduk
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Postgres: clear entire database before re-creating / re-populating from bash script
...elopment_db_name
$ createdb developmnent_db_name
That's how I do it, actually.
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Having links relative to root?
Is there a way to have all links on a page be relative to the root directory?
6 Answers
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How do I use HTML as the view engine in Express?
...will work, but to serve out HTML, there is no need to use a view engine at all, unless you want to set up funky routing. Instead, just use the static middleware:
app.use(express.static(__dirname + '/public'));
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How to share my Docker-Image without using the Docker-Hub?
...ers are stored by default under /var/lib/docker. While you could (theoretically) cherry pick files from there and install it in a different docker server, is probably a bad idea to play with the internal representation used by Docker.
When you push your image, these layers are sent to the registry ...
Inheriting from a template class in c++
... way you speak about them determines the way to think about them.
Specifically, Area is not a template class, but a class template. That is, it is a template from which classes can be generated. Area<int> is such a class (it's not an object, but of course you can create an object from that cl...