Julia

which one(s) is correct for calling

f(a, b=1) = a+b

• f(1, 2)

• f(1, b=2)

• f(1; b=2)

• f(a=1, b=2)

• f(a=1; b=2)

which one(s) is correct for calling

f(a;b=1) = a+b

• f(1, 2)

• f(1, b=2)

• f(1; b=2)

• f(a=1, b=2)

• f(a=1; b=2)

Select all the correct way(s) to define a function

• f = (x) -> 2x

• foo(x)

  return x + 2

  end

• function (x)

  x+ 2

  end

• def foo(x)

  x+2

  end

• (x) => x+2

Functions can be nested

• True

• False

Output of the code:

• Runtime error

• Compilation error

• An array

• A function

• An Int

Output of the code:

• [1, 2, 1]

• Error

• [0, 1, 2, 1]

Output of the code

• 3

• error

• 3.0

• nothing

How many method(s) does:

square(x) = x * x

defines?

• 0

• 1

• 2

• 3

• infinite

What does the following code return:

@which 2.0 + 2

• +(x::Float64, y::Float64) in Base at ...

• +(x::Number, y::Number) in Base at ...

• +(x::Any, y::Any) in Base at ...

• +(x::Float64, y::Int) in Base at ...

Output of

checkZero(0)

• error

• "n is not zero"

• "n is zero"

• "n is not zero"

  True

• "n is not zero"

  False