Django is a full stack framework for web development. It powers some of the most popular websites on the Internet.
To install the framework; use the pip tool:
pip install django
If you are installing this on OSX or Linux, the above command may result in a permission error; to avoid this error, ...
ggplot(iris[iris$Species == "setosa",],aes(Sepal.Width)) +
geom_density()
Here, we are subsetting the dataframe before passing it to ggplot. It is a very useful tool derived from the data frame data structure.
To make the code more readable, one can also use dplyr's filter:
libr...
This example shows how to find circular blobs in an grayscale image. The evaluation of the circularity of a blob is done using the area and the perimeter (arc length) of the contour. The center point gets evaluated using the moments of the contour.
#include "opencv/cv.h"
#include "...
By default, mix new <projectname> will generate a .gitignore file in the project root that is suitable for Elixir.
# The directory Mix will write compiled artifacts to.
/_build
# If you run "mix test --cover", coverage assets end up here.
/cover
# The directory Mix downloads...
When the temp table is created by itself, it will remain while the connection is open.
// Widget has WidgetId, Name, and Quantity properties
public async Task PurchaseWidgets(IEnumerable<Widget> widgets)
{
using(var conn = new SqlConnection("{connection string}")) {
...
Pretext:
These are detailed instructions on how to set up a Raspberry Pi with the Raspbian operating system.
These instructions are somewhat Windows specific.
Some installation steps may apply to other operating systems as well, but keep the former in mind.
Contents
Requirements
Choosing an ...
Here is the corresponding Java configuration:
Add this annotation to an @Configuration class to have the Spring Security configuration defined in any WebSecurityConfigurer or more likely by extending the WebSecurityConfigurerAdapter base class and overriding individual methods:
@Configuration
@En...
This example uses SqlConnection, but any IDbConnection is supported.
Also any IDbTransaction is supported from the related IDbConnection.
public void UpdateWidgetQuantity(int widgetId, int quantity)
{
using(var conn = new SqlConnection("{connection string}")) {
conn.Open()...
//define a short alias to avoid chubby method signatures
using AppFunc = Func<IDictionary<string, object>, Task>;
class RequestTimeMiddleware
{
private AppFunc _next;
public RequestTimeMiddleware(AppFunc next)
{
_next = next;
}
public async Task...
The Java Language Specification describes Annotations as follows:
An annotation is a marker which associates information with a program construct, but has no effect at run time.
Annotations may appear before types or declarations. It is possible for them to appear in a place where they could a...
You can run Theano on multiple CPU cores with the OMP_NUM_THREADS=[number_of_cpu_cores] flag.
Example:
OMP_NUM_THREADS=4 python gpu_test.py
The script theano/misc/check_blas.py outputs information regarding which BLAS is used:
cd [theano_git_directory]
OMP_NUM_THREADS=4 python theano/misc/ch...
Assuming you have already set up an app in Android Studio, add a ListView to a layout
(or skip if that's already done):
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/...
You can add a method to any class in Ruby, whether it's a builtin or not. The calling object is referenced using self.
class Fixnum
def plus_one
self + 1
end
def plus(num)
self + num
end
def concat_one
self.to_s + '1'
end
end
1.plus_one # => 2
3.plus(5) ...
I am developing a mobile app using ionic 2 with Angular 2.
I have an ion-list filled ion-items. I want those ion-item to have the ability to be deleted if needed as presented here on the ionic website.
However, a lot have changed in ionic 2 since the first version and the above style of one button...
After you wrapped your app into provider you can use connect function to subscribe your component to store changes and provide mapping between Redux state properties and React components' properties:
import { connect } from 'react-redux';
const MyComponent = ({data}) => (
<div>{data...
