Xamarins built in gesture recognizers provide only very basic touch handling. E.g. there is no way to get the position of a touching finger.
MR.Gestures is a component which adds 14 different touch handling events. The position of the touching fingers is part of the EventArgs passed to all MR.Gestu...
Imagine the following XML:
<root>
<element foobar="hello_world" />
<element example="this is one!" />
</root>
/root/element[@foobar]
and will return the <element foobar="hello_world" /> element.
Imagine the following XML:
<root>
<element foobar="hello_world" />
<element example="this is one!" />
</root>
The following XPath expression:
/root/element[@foobar = 'hello_world']
will return the <element foobar="hello_world&quo...
For using Attribute Routing in areas, registering areas and [RouteArea(...)] definitions are required.
In RouteConfig.cs :
public class RouteConfig
{
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
...
How do you handle errors, rather then log them to the console?
Bad way:
Router.route('/')
.get((req, res) => {
Request.find((err, r) => {
if(err){
console.log(err)
} else {
res.json(r)
}
})
})
.post((req, res) => {
const reque...
When sending a notification to an iOS device, you must set priority: "high" for it to wake up. Otherwise, the notification will not be received while the phone is asleep.
Sets the priority of the message. Valid values are "normal" and "high." On iOS, these correspond...
var renderer = Platform.GetRenderer(visualElement);
if (renderer == null)
{
renderer = Platform.CreateRenderer(visualElement);
Platform.SetRenderer(visualElement, renderer);
}
DoSomeThingWithRender(render); // now you can do whatever you want with render
OpenCL is low level api so it must be implemented in "C space" first. For that, one needs to download header files from Khronos' site. My hardware is AMD and capable of version 1.2, downloading
opencl.h
cl_platform.h
cl.h
cl_ext.h
cl_egl.h
cl_dx9_media_sharing.h
cl_d3d10.h
c...
mongodump --db mydb --gzip --out "mydb.dump.$(date +%F_%R)"
This command will dump a bson gzipped archive of your local mongod 'mydb' database to the 'mydb.dump.{timestamp}' directory
Today, performance is one of the most important metrics we need to evaluate when developing a web service/Application. Keeping customers engaged is critical to any product and for this reason, it is extremely important to improve the performances and reduce page load times.
When running a web serve...
Suppose we want to have the following behaviour - We have a heading (say h3 element) and on clicking it, we want it to become an input box so that we can modify heading name. React makes this highly simple and intuitive using component states and if else statements. (Code explanation below)
// I ha...
The first thing you want to do for local development is install ElasticSearch in your machine and test it to see if it is running. It requires Java to be installed. The installation is pretty straightforward:
Mac OS X: brew install elasticsearch
Ubuntu: sudo apt-get install elasticsearch
Then...
When you are getting started with ElasticSearch (ES) it might be good to have a graphical tool that helps you explore your data. A plugin called elasticsearch-head does just that. To install it, do the following:
Find out in which folder ES is installed: ls -l $(which elasticsearch)
cd into this...
ElasticSearch has a well-documented JSON API, but you'll probably want to use some libraries that handle that for you:
Elasticsearch - the official low level wrapper for the HTTP API
Elasticsearch-rails - the official high level Rails integration that helps you to connect your Rails models...
