Tutorial by Examples: ti

To make a navigation bar using the HTML5 nav element, encase the links within the nav tag. <nav> <a href="#">Home</a> <a href="#">About</a> <a href="#">Contact</a> </nav>

public class Foo { private String name; public Foo(@NonNull String name){...}; ... } Here @NonNull is annotation which is processed compile time by the android studio to warn you that the particular function needs non null parameter.

Ensure you met all requirements, as per Requirements Mount the temporary API filesystems: cd /location/of/new/root mount -t proc proc proc/ mount --rbind /sys sys/ mount --rbind /dev dev/ mount --rbind /run run/ (optionally) If you need to use an internet connection in the c...

There are three types of annotations. Marker Annotation - annotation that has no method @interface CustomAnnotation {} Single-Value Annotation - annotation that has one method @interface CustomAnnotation { int value(); } Multi-Value Annotation - annotation that...

For creating custom annotations we need to decide Target - on which these annotations will work on like field level, method level, type level etc. Retention - to what level annotation will be available. For this, we have built in custom annotations. Check out these mostly used ones: @Target...

You can create a new notebook in RStudio with the menu command File -> New File -> R Notebook If you don't see the option for R Notebook, then you need to update your version of RStudio. For installation of RStudio follow this guide

Chunks are pieces of code that can be executed interactively. In-order to insert a new chunk by clicking on the insert button present on the notebook toolbar and select your desired code platform (R in this case, since we want to write R code). Alternatively we can use keyboard shortcuts to insert a...

You can run the current chunk by clicking Run current Chunk (green play button) present on the right side of the chunk. Alternatively we can use keyboard shortcut Ctrl + Shift + Enter (OS X: Cmd + Shift + Enter) The output from all the lines in the chunk will appear beneath the chunk. Splitting Co...

When you execute code in a notebook, an indicator will appear in the gutter to show you execution progress. Lines of code which have been sent to R are marked with dark green; lines which have not yet been sent to R are marked with light green. Executing Multiple Chunks Running or Re-Running indiv...

You can also update R from within R by using a handy package called installr. Open R Console (NOT RStudio, this doesn't work from RStudio) and run the following code to install the package and initiate update. install.packages("installr") library("installr") updateR()

You can update your installed packages once the updating of R is done. Once its done Restart R and enjoy exploring.

A Django model typically refers to a table in the database, attributes of that model becomes the column of that table. In more of a real-world example, you would create a model for any entity in your application, and store its attributes with django fields which automatically handles data-types conv...

When you use python file as module there is no need always check if package is installed but it is still useful for scripts. if __name__ == '__main__': try: import requests except ImportError: print("To use this module you need 'requests' module") t ...

iPhone App import WatchConnectivity and conform to WCSessionDelegate. use the static session delegate via WCSession.default(). Send data to Watch app using: WCSession.default().sendMessage(message, replyHandler:_ errorHandler:_) The message object should be a dictionary of type [Stri...

WatchKit App import WatchConnectivity and conform to WCSessionDelegate. use the static session delegate via WCSession.default(). Send data to the iPhone app using: WCSession.default().sendMessage(message, replyHandler:_ errorHandler:_) The message object should be a dictionary of typ...

Let's say that whenever someone visits a profile page in Bob's website, the following URL is fetched: https://example.com/api/users/1234/profiledata.json With a response like this: { "name": "Bob", "description": "Likes pie & security holes.&quot...

Detailed instructions on getting scapy set up or installed.

Detailed instructions on getting statistics set up or installed.

Deleting rows is slow, specially when looping through cells and deleting rows, one by one A different approach is using an AutoFilter to hide the rows to be deleted Copy the visible range and Paste it into a new WorkSheet Remove the initial sheet entirely With this method, th...

The procedures bellow will temporarily disable all Excel features at WorkBook and WorkSheet level FastWB() is a toggle that accepts On or Off flags FastWS() accepts an Optional WorkSheet object, or none If the ws parameter is missing it will turn all features on and off for all WorkSh...