What means concat in function? Dont remember to see that in lessons at all..

Answer 1

if you have to strings, lets say
x = "foo"; y = "bar";
use x.concat(y); to chain them together and get "foobar". this function just takes the string you called it on (x) and adds the value of the second string (y) and returns it.

Answer 2

it means the result would be foobar?

Answer 3

correct. check out my codes for an example

Answer 4

thanks. and where i can find them?

Answer 5

go to my profile -> codes. you can go to an users profile when you click the colored circle on the right side of a post