Friday, December 15, 2017

How to Recover Deleted Files / Pictures From USB Flash Drive or SD Card





Download PhotoRec and TestDisk - http://www.cgsecurity.org/wiki/TestDi...

In This Video I am going to show How to Recover Deleted Files / Pictures From USB Flash Drive or SD Card. This method will also works for the file recovery from formatted USB drives or SD cards or hard disks. How to Recover Deleted, Corrupted, or Lost Pictures. 
This we will do with a software called PhotoRec. PhotoRec is a open source which will recover you file for no cost. This method will work for Permanently deleted files on USB flash drives, pen drives, memory cards and HDD/SSD.

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Thursday, December 14, 2017

How to setup Scala on Intellij IDEA IDE + First SBT/Scala project



In this video we will learn How to setup Scala on Intellij IDEA IDE. In addition I am going to show how to create our First SBT/Scala project.



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Sunday, November 19, 2017

scp command - SCP to Securely Transfer Files/Folders in Linux





Some time you may wonder In Unix, how do I securely transfer files between two Linux computers? So generally we use scp command to   Securely Transfer Files/Folders in Linux (e.g. Ubuntu, Cent OS, Fedora, Linux mint ..). scp stands for "secure copy."



scp syntax



scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]

    [-l limit] [-o ssh_option] [-P port] [-S program]

    [[user@]host1:]file1 ... [[user@]host2:]file2



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Sunday, November 12, 2017

Scala Tutorial 10 - Match expressions





Find more such tutorials on -  http://www.codebind.com

In Scala match expressions are used to select between a list of alternatives same as multiple if-statements or select statement, if you are familiar with java.



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Tuesday, October 31, 2017

Scala Tutorial 9 - Scala For Loop



Find code here : http://www.codebind.com/scala/scala-while-and-do-while-loops/

So what is a loop ?

loops allow us to execute a statement or a block of statements multiple times. Like conditional statements, they are controlled by boolean expressions.



The for comprehension



Scala’s for is much more powerful than Java’s for

Consequently, it is used much more often than the other kinds of loops

Prints the numbers 1 through 10

Prints the numbers 1 through 9

Prints all the values in myArray

Prints all the values in myArray

Prints all the even numbers in myArray

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Monday, October 9, 2017

Scala Tutorial 6 - Scala String Interpolation





In Scala it’s common to inject variables in strings like this with the different types of string interpolation:



Scala supports basically three kinds of String Interpolation:

s String Interpolator -  Prepending s to any string literal allows the usage of variables directly in the string



f String Interpolator - Prepending f to any string literal allows the creation of simple formatted strings. It is  similar to C languages style printf . When using the f interpolator, all variable references should be followed by a printf style format string, like %d, %s, %f etc.



raw String Interpolator - The raw interpolator is similar to the s interpolator except that it performs “No escaping of literals within the string”



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Wednesday, September 20, 2017

Scala Tutorial 4 - Data Types and Variables



Strong typing is very important in functional programming

Most scripting like Ruby, Python, etc. are dynamically typed, which is supposed to be one of their advantages.

Static typing makes programming much safer.

But sometimes types declarations become a burden.

Scala’s type inferencing mechanism minimizes the number of type declarations required.

It’s not uncommon for user code to have no explicit types.



Data Types Byte : 8 bit signed value. Range from -128 to 127

Short : 16 bit signed value. Range -32768 to 32767 Int : 32 bit signed value. Range -2147483648 to 2147483647

Long : 64 bit signed value. -9223372036854775808 to 9223372036854775807

Float : 32 bit IEEE 754 single-precision float

Double : 64 bit IEEE 754 double-precision float Char : 16 bit signed Unicode character. Range from U+0000 to U+FFFF

String : A sequence of Chars

Boolean : Either the literal true or the literal false Unit: Corresponds to no value : void

Null: null or empty reference

Nothing : The subtype of every other type; includes no values Any: The supertype of any type; any object is of type

Any : Java's Object class

AnyRef: The supertype of any reference type





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Saturday, September 16, 2017

Scala Tutorial 3 - How to Install and Setup SBT on Windows 10





SBT (Scala Build Tool, formerly Simple Build Tool) is an open source build tool for Scala and Java projects, similar to Java's Maven and Ant. In this video I am going to show you How to Install and Setup SBT on Windows 10. Also i am going to show you How to execute sbt on Windows to open the interactive shell?



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Scala Tutorial 2 - Introduction to SBT (Scala Build Tool)



SBT (Scala Build Tool, formerly Simple Build Tool) is an open source build tool for Scala and Java projects, similar to Java's Maven and Ant. SBT is a modern build tool. While it is written in Scala and provides many Scala conveniences, it is a general purpose build tool. sbt is the de facto build tool in the Scala.
Why SBT :
- Native support for compiling Scala code.
- Uses Apache Ivy for dependency management
- Only-update-on-request model
- Full Scala language support for creating tasks
- Support for mixed Java/Scala projects
- Launch REPL (Read–Eval–Print Loop) in project context.

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