SilverStripe has reasonably good support for submitting form data using AJAX requests. Below is example code of how to set up a basic Form that accepts submissions by both AJAX and traditional default browser behaviour (as is good practice).
Adding the form to our controller
First we need to defin...
The following class is used to demonstrate, how instances of classes can be created:
JavaFX 8
The annotation in Person(@NamedArg("name") String name) has to be removed, since the @NamedArg annotation is unavailable.
package fxml.sample;
import javafx.beans.NamedArg;
import javafx....
textBox.KeyPress += (sender, e) => e.Handled = !char.IsControl(e.KeyChar) && !char.IsDigit(e.KeyChar);
This will only permit the use of digits and control characters in the TextBox, other combinations are possible using the same approach of setting the Handle property to true to block ...
After turning Lazy loading off you can lazily load entities by explicitly calling Load method for entries. Reference is used to load single navigation properties, whereas Collection is used to get collections.
Company company = context.Companies.FirstOrDefault();
// Load founder
context.Entry(com...
The most common way is to apply the extension via Config. Example:
# File: mysite/_config/config.yml
Member:
extensions:
- MyMemberExtension
The extensions config variable is of type "array", so you can add multiple extensions like this:
# File: mysite/_config/config.yml
Mem...
library(gpuR)
# gpuMatrix objects
X <- gpuMatrix(rnorm(100), 10, 10)
Y <- gpuMatrix(rnorm(100), 10, 10)
# transfer data to GPU when operation called
# automatically copied back to CPU
Z <- X %*% Y
library(gpuR)
# vclMatrix objects
X <- vclMatrix(rnorm(100), 10, 10)
Y <- vclMatrix(rnorm(100), 10, 10)
# data always on GPU
# no data transfer
Z <- X %*% Y
From MSDN
Use the CInt function to provide conversions from any other data type
to an Integer subtype. For example, CInt forces integer arithmetic
when currency, single-precision, or double-precision arithmetic would
normally occur.
Assuming that you have 1 button and 2 textbox. If you type...
Download the Apache Felix Framework Distribution and extract it into a directory:
$ tar xf org.apache.felix.main.distribution-5.4.0.tar.gz
$ cd felix-framework-5.4.0
And then start the framework with the following command:
$ java -jar bin/felix.jar
____________________________
Welcome to...
This example will call the windows calculator. It's important to notice that the exit code will vary accordingly to the program/script that is being called.
package process.example;
import java.io.IOException;
public class App {
public static void main(String[] args) {
try {
...
Launching external processes from Java using the raw java.lang.ProcessBuilder API directly can be a little cumbersome. The Apache Commons Exec library makes it a little easier. The ch.vorburger.exec library further extends upon Commons Exec to make it truly convenient:
ManagedProcess proc = new ...
This proxy simply appends the string " went through proxy" to every string property set on the target object.
let object = {};
let handler = {
set(target, prop, value){ // Note that ES6 object syntax is used
if('string' === typeof value){
target[prop] = valu...
Here's a way to show a GIF preloader while an AJAX call is executing.
We need to prepare our add and remove preloader functions:
function addPreloader() {
// if the preloader doesn't already exist, add one to the page
if(!document.querySelector('#preloader')) {
var preloaderHTML = '<...
For example:
ActiveRecord::Base.transaction do
david.withdrawal(100)
mary.deposit(100)
end
This example will only take money from David and give it to Mary if neither withdrawal nor deposit raise an exception. Exceptions will force a ROLLBACK that returns the database to the state before ...
In same cases different models could have same fields and same procedures in the product life cycle.
To handle these similarities without having code repetition inheritance could be used.
Instead of inheriting a whole class, mixin design pattern offers us to inherit (or some says include) some met...
When matching the path of a route, you can do it explicitly, matching only one path, like so:
get "/hello" do
return "Hello!"
end
You can also use a regular expression to match complex routes. Any route which matches the regular expression will run that code block. If m...
from django.db import models
from django.contrib.auth.models import User
from django.db.models.signals import post_save
from django.dispatch import receiver
class UserProfile(models.Model):
user = models.OneToOneField(User, related_name='user')
website = models.URLField(default='', ...
Exceptions are powerful, but a single overzealous except clause can take it all away in a single line.
try:
res = get_result()
res = res[0]
log('got result: %r' % res)
except:
if not res:
res = ''
print('got exception')
This example demonstrates 3 symptoms of t...
Add this line at the beginning of your view.
<?php
use yii\widgets\Pjax;
?>
Add the following two lines around the content that needs partial updating.
<?php Pjax::begin(['id'=>'id-pjax']); ?>
Content that needs to be updated
<?php Pjax::end(); ?>
reload pjax
$.pjax...
