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...
If the built in attributes are not sufficient to validate your model data, then you can place your validation logic in a class derived from ValidationAttribute. In this example only odd numbers are valid values for a model member.
Custom Validation Attribute
public class OddNumberAttribute : Valid...
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
mongorestore --db mydb mydb.dump.2016-08-27_12:44/mydb --drop --gzip
This command will first drop your current 'mydb' database and then restore your gzipped bson dump from the 'mydb mydb.dump.2016-08-27_12:44/mydb' archive dump file.
As the first step, we’ll build a basic web server that stores data in MongoDB. For this demonstration, we’ll name it “fast Library”. The server will have two basic operations:
POST /book: This endpoint will receive the title, the author, and the content of the book, and create a book entry in the d...
1.Download font-awesome from here.
2.Copy the font-awesome directory into your project.
3.In the of your html, reference the location to your font-awesome.min.css.
<link rel="stylesheet" href="path/to/bootstrap/css/bootstrap.min.css">
<link rel="stylesheet"...
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...
FOR XML PATH and STUFF to concatenate the multiple rows into a single row:
select distinct t1.id,
STUFF(
(SELECT ', ' + convert(varchar(10), t2.date, 120)
FROM yourtable t2
where t1.id = t2.id
FOR XML PATH (''))
, 1,...
Ubuntu binaries are available for both 32-bit and 64-bit architectures
source /etc/lsb-release && echo "deb http://download.rethinkdb.com/apt $DISTRIB_CODENAME main" | sudo tee /etc/apt/sources.list.d/rethinkdb.list
wget -qO- https://download.rethinkdb.com/apt/pubkey.gpg | sudo a...
Downloading
Prerequisites: We provide native 64-bit binaries for Windows 7 and above. A 64-bit version of Windows is required.
Download the ZIP archive and unpack it in a directory of your choice.
The Windows port of RethinkDB is a recent addition and hasn't received as much tuning as the Linux a...
Navs available in Bootstrap have shared markup, starting with the base .nav class, as well as shared states. Swap modifier classes to switch between each style.
Tabs
<ul class="nav nav-tabs">
<li role="presentation" class="active"><a href="#&quo...
This custom UserControl will appear as a regular combobox, but unlike the built-in ComboBox object, it can show the user a default string of text if they have not made a selection yet.
In order to accomplish this, our UserControl will be made up of two Controls. Obviously we need an actual ComboBox...
QML came with rich set of visual elements. Using only QML we can build complex applications with these elements.
Also it's very easy to build your own element based on set of standard items like Rectangle, Button, Image etc.
Moreover, we can use items like Canvas to build element with custom paint...
Goto - http://www.jorambarrez.be/blog/2010/08/02/tutorial-a-bpmn-2-0-hello-world-with-activiti-5-0-alpha4-in-5-steps/
A very Good and detailed tutorial by Joram Barrez (one of the core Developer of Activiti)
Denormalization and a flat database structure is neccessary to efficiently download separate calls. With the following structure, it is also possible to maintain two-way relationships. The disadvantage of this approach is, that you always need to update the data in multiple places.
For an example, ...
[TestCase(0, 0, 0)]
[TestCase(34, 25, 59)]
[TestCase(-1250, 10000, 8750)]
public void AddNumbersTest(int a, int b, int expected)
{
// Act
int result = a + b;
// Assert
Assert.That(result, Is.EqualTo(expected));
}
