Scala Tutorial 4 - Data Types and Variables

[@siddheshswnt]

I am glad that I stumbled upon this channel.

[@GauravgaurG]

This is really a nice introductory video for val/var in Scala, but I think it would be good to first talk about expressions in Scala and then move on to a little bit complex example like the one mentioned on time 11:51. As it is bit confusing to read this statement when someone is just starting on Scala

[@seanmceachern6151]

Thank you! I couldn't figure out how to get into scala interpreter! I was just missing the scala console command. whew

[@murifedontrun3363]

The below code works: val x = { val x: Int = 100 ; val y : Int = 200; x + y} My question in regards to the above, is if we have already defined x with val as 100, then why in the result the new value of x i.e 300 is successfully getting stored? Why not throwing an error?

[@Sanjusamson_8283]

As again we assigning the value in x (val x;int =300), it is taking as new value. Just try this (val x : int = 50) in the x variable 50 values is present .then x = 60 u can not change .hence we have used val. Just do same process with var . The x value will be changed

[@vishakha1902]

I have a query : val means immutable variable. Then in video you assigned val x 2 different values. And scala didn't throw any error. Why?

[@imdebasispanda]

because when you do x * 2 you are assigning the result to a new variable(here its res3) not itself to x.

[@tipandtrick5700]

I'm open Android studio and open an existing android studio project but some errors this game 8 ball pool apk

[@techzoo1]

Thanks for creating an understandable tutorial about Scala. I’m sorry but the official Scala course on Coursera is a piece of crap in comparison.

[@nallamillibalaveeraraghava9663]

Just like swift language for ios

[@rafiulhassan4027]

putting val before any variable makes the variable's value unchangeable ,right? but here in the example of 1st multi statement/expression , once the result initialized in x variable < x: Int = 500 > and later on the 2nd example value of x changed < x: Int =1100 > how?

[@pallavisingh7143]

I also have this doubt.. Can anybody explain??

[@bubblesgrappling736]

Am i the only one that this does absolutely not work for??

[@tipandtrick5700]

hello can you explain how to open 8 ball pool game and how to level change and how to coins change and how to change cash full detail give me please and how is some errors and problems so example and video give me notification OK

[@rafiulhassan4027]

i don't understood what are you looking for?