Is this "x" a variable?

Question
1

for this case:

scala> for (x <- 1 to 10) {
     |  println(x)
     | }

Is the “x” a variable in this loop? why it don’t need a “var x” definition?

Thanks.

2

x isn’t a var; no mutation occurs here, but rather a fresh binding each time.

It desugars to: (1 to 10).foreach(x => println(x))

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