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How to drop a list of rows from Pandas dataframe?
...e the same strings for rows and columns. That's fine for those who really know their stuff already. Frustrating for those trying to learn.
– gseattle
Mar 19 '17 at 7:40
4
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Constructor of an abstract class in C#
... possible to write constructor for an abstract class in C#?
As far as I know we can't instantiate an abstract class.. so what is it for?
You can't instantiate the class, right?
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How to deep watch an array in angularjs?
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in 1.1.x you now have $watchCollection
– Jonathan Rowny
Aug 29 '13 at 18:36
39
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What is the curiously recurring template pattern (CRTP)?
...ss A : public X<A> {...};
It is curiously recurring, isn't it? :)
Now, what does this give you? This actually gives the X template the ability to be a base class for its specializations.
For example, you could make a generic singleton class (simplified version) like this
template <cl...
How to get all child inputs of a div element (jQuery)
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Interesting... Now I'm confused... The : is for pseudo-classes, isn't it? But we want to select an element type. Why the :?
– mnemosyn
Mar 8 '10 at 16:15
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How to vertically center content with variable height within a div?
... Then I noticed that most transform related stuff is -webkit- prefixed and now it works. So just as a reminder: Don't forget to add the -webkit- prefix too.
– miho
Mar 6 '15 at 19:20
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How to make rounded percentages add up to 100%
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@VarunVohra sorry i didn't notice this until now, yes it looks like your algorithm is the same :) not sure why my post is the accepted answer, the obfuscated code was just for the lolz...
– yonilevy
Mar 31 '14 at 10:40
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How to get current time and date in Android
...an (but no longer should - see below!) use android.text.format.Time:
Time now = new Time();
now.setToNow();
From the reference linked above:
The Time class is a faster replacement
for the java.util.Calendar and
java.util.GregorianCalendar classes.
An instance of the Time class
represe...
How to convert a data frame column to numeric type?
... that you should apply transform function in order to complete your task.
Now I'm about to demonstrate certain "conversion anomaly":
# create dummy data.frame
d <- data.frame(char = letters[1:5],
fake_char = as.character(1:5),
fac = factor(1:5),
...
When to use EntityManager.find() vs EntityManager.getReference() with JPA
...etter method). Just to change state (I mean setter method). As you should know, getReference returns a proxy object which uses a powerful feature called automatic dirty checking. Suppose the following
public class Person {
private String name;
private Integer age;
}
public class PersonS...