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How to assign colors to categorical variables in ggplot2 that have stable mapping?
... best. However, I think it's useful to point out another approach that becomes easier when you're trying to maintain consistent color schemes across multiple data frames that are not all obtained by subsetting a single large data frame. Managing the factors levels in multiple data frames can become ...
Java 8 NullPointerException in Collectors.toMap
...etty, but it works. Result:
1: true
2: true
3: null
(this tutorial helped me the most.)
EDIT:
Unlike Collectors.toMap, this will silently replace values if you have the same key multiple times, as @mmdemirbas pointed out in the comments. If you don't want this, look at the link in the comment.
...
Unit Testing AngularJS directive with templateUrl
...g. The template system tries to load the template through $http and it becomes an "unexpected request" to the mock.
What you need a way to pre-load the templates into the $templateCache so that they're already available when Angular asks for them, without using $http.
The Preferred Solution: Karma...
Landscape printing from HTML
...umns. It there a way to do this, without the user having to change the document settings?
16 Answers
...
Can virtual functions have default parameters?
...or interface class) and specify a default value for one or more of its parameters, do the derived classes have to specify the same defaults and if not, which defaults will manifest in the derived classes?
...
How can I stop a Postgres script when it encounters an error?
... on
there exists much more simple and convenient way - use psql with parameter:
psql -v ON_ERROR_STOP=1
better to use also -X parameter turning off .psqlrc file usage.
Works perfectly for me
p.s. the solution found in great post from Peter Eisentraut. Thank you, Peter!
http://petereisentraut.b...
How to get a URL parameter in Express?
...
Express 4.x
To get a URL parameter's value, use req.params
app.get('/p/:tagId', function(req, res) {
res.send("tagId is set to " + req.params.tagId);
});
// GET /p/5
// tagId is set to 5
If you want to get a query parameter ?tagId=5, then use req.q...
How to draw a rounded Rectangle on HTML Canvas?
...
The HTML5 canvas doesn't provide a method to draw a rectangle with rounded corners.
How about using the lineTo() and arc() methods?
You can also use the quadraticCurveTo() method instead of the arc() method.
...
Best branching strategy when doing continuous integration?
...really interesting since I heavily rely on branches on my daily job.
I remember Mark Shuttleworth proposing a model about keeping the main branch pristine while going beyond conventional CI. I posted about it here.
Since I'm familiar with Cruise Control, I also blogged about task branches and CI h...
wget/curl large file from google drive
...
WARNING: This functionality is deprecated. See warning below in comments.
Have a look at this question: Direct download from Google Drive using Google Drive API
Basically you have to create a public directory and access your files by relative reference with something like
wget https://g...