julia - 在 Julia 中插值时如何格式化字符串？

Question

在 Python 3 中，我会

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

或者

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

在 Julia

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

但这会产生说

Look at this significant figure formatted number: 61.61616161616161

如何让 Julia 限制它显示的小数位数？请注意，据我所知，要打印的字符串的必要存储排除了使用 @printf 的可能性。宏。

这可行，但在风格上似乎不正确。

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

除了@niczky12 的回答，您还可以使用Formatting专为这类东西设计的包装!

Pkg.add("Formatting")
using Formatting: printfmt
x = 1.77715
printfmt("I'm long: $x, but I'm alright: {:.2f}", x)

输出:

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