scala 中带有日期到字符串转换的字符串插值

Question

I'm trying to figure out how to make string interpolation with date cast to string. Here is the sample, in python I do

def get_the_last_n_days(days):
    return f"'{str(datetime.now().date() - timedelta(days))}'"

Basically, it will return the current date subtract by the number of given days. For instance, considering the date 2021-04-08 :

• If the given number is 1, the output will be the string 2021-04-08 ;
• If the given number is 8, the output will be the string 2021-03-31 ;

Again, in python I would something like:

print(f"I'm married since {get_the_last_n_days(0)}")

To interpolate the string, the statement above would print something like I'm married since 2021-04-08

I've tried some approach but without success.

Answer 1

Something like this?

import java.time.LocalDate

def daysAgo(n: Long) : LocalDate =
  LocalDate.now().minusDays(n)

s"I'm vaccinated since ${daysAgo(9)}."
//res0: String = I'm vaccinated since 2021-03-29.