Tutorial by Examples: o

Except main @conditional annotation there are set of similar annotation to be used for different cases. Class conditions The @ConditionalOnClass and @ConditionalOnMissingClass annotations allows configuration to be included based on the presence or absence of specific classes. E.g. when OObjectDa...

A model (see: Model-View-Controller pattern) in Grails is represented by a so-called Domain Class. Domain classes can define both the persistence and presentation of information in grails. Domain classes can also contain validations. To manage a fleet of cars in your Grails application you could de...

Detailed instructions on getting kernel set up or installed.

Create a console application. Install EntityFramework nuget package by running Install-Package EntityFramework in "Package Manager Console" Add your connection string in app.config file , It's important to include providerName="System.Data.SqlClient" in your connection. Cre...

First, determine the source file for this particular driver. Found it at drivers/usb/serial/ftdi_sio.c. ./scripts/get_maintainer.pl drivers/usb/serial/ftdi_sio.c And the results: Johan Hovold <[email protected]> (maintainer:USB SERIAL SUBSYSTEM) Greg Kroah-Hartman <gregkh@linuxfounda...

This example shows how to create a custom presentation transition that is driven by a composite UIDynamicBehavior. We can start by creating a presenting view controller that will present a modal. Swift class PresentingViewController: UIViewController { lazy var button: UIButton = { ...

Create a file (e.g. hello_world.py) in a text editor or a python editor if you have one installed (pick one if you don't - SublimeText, Eclipse, NetBeans, SciTe... there's many!) hwld = 'Hello world' print(hwld) Note that python variables do not need to be explicitly declared; the declaration h...

With the release of sass 3.3 and plus version the @if and else conditions syntax got same. we can now use expressions with not only scss but also sass. sass syntax @for $i from 1 through 3 { .item-#{$i} { width: 2em * $i; } } Compiled to .item-1 { width: 2em; } .item-2 { width: 4em...

If you have a multidimensional array like this: [ ['foo', 'bar'], ['fizz', 'buzz'], ] And you want to change it to an associative array like this: [ 'foo' => 'bar', 'fizz' => 'buzz', ] You can use this code: $multidimensionalArray = [ ['foo', 'bar'], ...

The command syntax will be of the following type: <REST Verb> /<Index>/<Type>/<ID> Execute the following command to explore elasticsearch cluster through Kibana Console. For checking the cluster health GET /_cat/health?v For listing all the indices GET /_cat...

Detailed instructions on getting sling set up or installed.

Elasticsearch provides data manipulation & data searching capabilities in almost real time. under this example, we have update, delete & batch processing operations. Updating the same document. Suppose we have already indexed a document on /car/external/1 . Then running the command for i...

In the beginning there were callbacks, and callbacks were ok: const getTemperature = (callback) => { http.get('www.temperature.com/current', (res) => { callback(res.data.temperature) }) } const getAirPollution = (callback) => { http.get('www.pollution.com/current', (res) ...

Command-line options for applications are not treated any differently from command-line arguments by the C language. They are just arguments which, in a Linux or Unix environment, traditionally begin with a dash (-). With glibc in a Linux or Unix environment you can use the getopt tools to easily d...

As the header already says, the following list contains "interoperable signature types" which are more or less strictly defined. The PDF specification specifies a way to also include completely custom signing schemes. But let us assume we are in an interoperable situation. The the collecti...

This example shows how to make an interactive presentation transition with "real-world" physics similar to iOS's notifications screen. To start with, we need a presenting view controller that the shade will appear over. This view controller will also act as our UIViewControllerTransitio...

The scatter function has two undocumented properties 'jitter' and 'jitterAmount' that allow to jitter the data on the x-axis only. This dates back to Matlab 7.1 (2005), and possibly earlier. To enable this feature set the 'jitter' property to 'on' and set the 'jitterAmount' property to the desired ...

The old-school method for running another script from batch is to echo the script into another location, and then run it. This method can be represented like this: @echo off rem VBS below echo your vbs > TempVBS.vbs echo other vbs>>TempVBS.vbs rem End of VBS cscript //nolog...

Another convenient solution for cross compilation is the usage of gox: https://github.com/mitchellh/gox Installation The installation is done very easily by executing go get github.com/mitchellh/gox. The resulting executable gets placed at Go's binary directory, e.g. /golang/bin or ~/golang/bin. E...

In order to load data from a MongoDB database into an R dataframe, use the library MongoLite: # Use MongoLite library: #install.packages("mongolite") library(jsonlite) library(mongolite) # Connect to the database and the desired collection as root: db <- mongo(collection = &quo...