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How to create a private class method?
...
end
puts "Hey, " + Person.get_name
puts "Hey, " + Person.persons_name
Alternatively (in ruby 2.1+), since a method definition returns a symbol of the method name, you can also use this as follows:
class Person
def self.get_name
persons_name
end
private_class_method def self.persons_n...
What is the best method of handling currency/money?
...re your migration for 'price' in this example doesn't allow nulls and defaults to 0 lest you go insane trying to figure out why this doesn't work.
– Cory
Nov 30 '10 at 1:41
3
...
What is the default access specifier in Java?
...arted reading a Java book and wondered; which access specifier is the default one, if none is specified?
12 Answers
...
What's the difference between lapply and do.call?
...y returns a list of the same length as X, each element of which is the result of applying FUN to the corresponding element of X.
do.call constructs and executes a function call from a name or a function and a list of arguments to be passed to it.
Map applies a function to the corresponding elements ...
Effects of the extern keyword on C functions
...
We have two files, foo.c and bar.c.
Here is foo.c
#include <stdio.h>
volatile unsigned int stop_now = 0;
extern void bar_function(void);
int main(void)
{
while (1) {
bar_function();
stop_now = 1;
}
return 0;
}
Now, here is bar.c
#include <stdio.h>
ext...
How to compute the similarity between two text documents?
...involved in the scikit-learn TF-IDF implementation.]
Interpreting the Results
From above, pairwise_similarity is a Scipy sparse matrix that is square in shape, with the number of rows and columns equal to the number of documents in the corpus.
>>> pairwise_similarity ...
Selecting only numeric columns from a data frame
...
Since a data frame is a list we can use the list-apply functions:
nums <- unlist(lapply(x, is.numeric))
Then standard subsetting
x[ , nums]
## don't use sapply, even though it's less code
## nums <- sapply(x, is.numeric)
For a more idiomatic modern R I'd now recommend
x[ , purrr::...
How to get a list of current open windows/process with Java?
...((line = input.readLine()) != null) {
System.out.println(line); //<-- Parse data here.
}
input.close();
} catch (Exception err) {
err.printStackTrace();
}
If you are using Windows, then you should change the line: "Process p = Runtime.getRun..." etc... (3rd line), for one th...
How to sort a Ruby Hash by number value?
...am trying to sort by count. The problem I am running into is that the default Hash.sort function sorts numbers like strings rather than by number size.
...
How to namespace Twitter Bootstrap so styles don't conflict
...ter opening the modal, e.g.:
$('#myModal').modal();
var modalHolder = $('<div class="your-namespace"></div>');
$('body').append(modalHolder);
$('.modal-backdrop').first().appendTo(modalHolder);
You can remove the element in a handler for the 'hide.bs.modal' event.
...