How do you format a string when interpolated in Julia?

Question

In Python 3, I would

print_me = "Look at this significant figure formatted number: {:.2f}!".format(floating_point_number) print(print_me) 

or

print_me = f"Look at this significant figure formatted number: {floating_point_number:.2f}!" print(print_me) 

In Julia

print_me = "Look at this significant figure formatted number: $floating_point_number" print(print_me) 

but this would yield say

Look at this significant figure formatted number: 61.61616161616161 

How do I get Julia to restrict the number of decimal places it displays? Note that the necessary storage of the string to be printed, to my knowledge, rules out using the @printf macro.

This works, but does not seem stylistically correct.

floating_point_number = round(floating_point_number,2) print_me = "Look at this significant figure formatted number: $floating_point_number" print(print_me) 

Answer 1

You can use @sprintf macro from the standard library package Printf. This returns a string rather than just printing it as @printf.

using Printf x = 1.77715 print("I'm long: $x, but I'm alright: $(@sprintf("%.2f", x))") 

Output:

I'm long: 1.77715, but I'm alright: 1.78