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Pandas conditional creation of a series/dataframe column
...reen
1 Z B green
2 X B red
3 Y C red
If you have more than two conditions then use np.select. For example, if you want color to be
yellow when (df['Set'] == 'Z') & (df['Type'] == 'A')
otherwise blue when (df['Set'] == 'Z') & (df['Type'] == 'B')
otherwise purple ...
How to create ls in windows command prompt?
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NSDate get year/month/day
...rently my most popular answer, I'll try to edit it to contain a little bit more information.
Despite its name, NSDate in and of itself simply marks a point in machine time, not a date. There's no correlation between the point in time specified by an NSDate and a year, month, or day. For that, you h...
Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
...grates better in their already built system
is easier to use
is faster
has more capabilities or better suits their needs
cost
more platfrom-independant
So I'll discuss the differences between canvas and webGL APIs regarding these qualities.
Both canvas and webGL are JavaScript APIs. They are pr...
How can I add an item to a IEnumerable collection?
...a new object that will list all items in the array, and then "Foo". Furthermore, that new object will keep track of changes in the array (i.e. whenever you enumerate it, you'll see the current values of items).
share
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Forking vs. Branching in GitHub
I'd like to know more about the advantages and disadvantages of forking a github project vs. creating a branch of a github project.
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Constructor function vs Factory functions
...thing. This does not happen automatically like with new, but it does allow more flexibility for some cases.
In a really simple example the functions referenced above might look something like this:
function ConstructorFunction() {
this.someProp1 = "1";
this.someProp2 = "2";
}
ConstructorFunc...
What is an efficient way to implement a singleton pattern in Java? [closed]
...is functionally equivalent to the public field approach, except that it is more concise, provides the serialization machinery for free, and provides an ironclad guarantee against multiple instantiation, even in the face of sophisticated serialization or reflection attacks. While this approach has ye...
How does data binding work in AngularJS?
... of weird corner cases and need things like dependency tracking to make it more semantically correct. KnockoutJS dependency tracking is a clever feature for a problem which AngularJS does not have.
Issues with change listeners:
The syntax is atrocious, since browsers do not support it natively. Y...
Why don't they teach these things in school? [closed]
...unate enough to get into Google Summer of Code. I learned a lot (probably more than I've learned in the sum of all my university coursework). I'm really wondering why they don't teach a few of the things I learned sooner in school though. To name a few:
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