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Plot correlation matrix into a graph
...ttice)
#Build the horizontal and vertical axis information
hor <- c("214", "215", "216", "224", "211", "212", "213", "223", "226", "225")
ver <- paste("DM1-", hor, sep="")
#Build the fake correlation matrix
nrowcol <- length(ver)
cor <- matrix(runif(nrowcol*nrowcol, min=0.4), nrow=nrow...
Find all records which have a count of an association greater than zero
...s an example
[10] pry(main)> Comment.distinct.pluck :article_id
=> [43, 34, 45, 55, 17, 19, 1, 3, 4, 18, 44, 5, 13, 22, 16, 6, 53]
[11] pry(main)> _.size
=> 17
[12] pry(main)> Article.joins(:comments).size
=> 45
[13] pry(main)> Article.joins(:comments).distinct.size
=> 17
[1...
What's the difference between lists and tuples?
...ge and line number to reference locations in a book, e.g.:
my_location = (42, 11) # page number, line number
You can then use this as a key in a dictionary to store notes on locations. A list on the other hand could be used to store multiple locations. Naturally one might want to add or remove l...
Bootstrap: align input with button
...
Twitter Bootstrap 4
In Twitter Bootstrap 4, inputs and buttons can be aligned using the input-group-prepend and input-group-append classes (see https://getbootstrap.com/docs/4.0/components/input-group/#button-addons)
Group button on the left...
How to use JNDI DataSource provided by Tomcat in Spring?
... 8 JNDI Datasource HOW-TO
Tomcat 8 Context Resource Links Reference
Spring 4 JEE JNDI Lookup XML Schema Reference
Spring 4 JndiObjectFactoryBean Javadoc
Edit: This answer has been updated for Tomcat 8 and Spring 4. There have been a few property name changes for Tomcat's default datasource resour...
What are the applications of binary trees?
...
434
To squabble about the performance of binary-trees is meaningless - they are not a data structu...
How do I add multiple arguments to my custom template filter in a django template?
...mple, if you want a filter that checks if variable X is in the list [1,2,3,4] you will want a template filter that looks like this:
{% if X|is_in:"1,2,3,4" %}
Now we can create your templatetag like this:
from django.template import Library
register = Library()
def is_in(var, args):
if arg...
Make xargs handle filenames that contain spaces
... |
edited Jul 23 at 8:04
gelonida
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answered Se...
What's the difference between and , and ?
...
reformed
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answered Nov 7 '08 at 11:07
splattnesplattne
...
is it possible to change values of the array when doing foreach in javascript?
...
498
The callback is passed the element, the index, and the array itself.
arr.forEach(function(par...