Pangram checker

You are encouraged to solve this task according to the task description, using any language you may know.
A pangram is a sentence that contains all the letters of the English alphabet at least once.

For example:   The quick brown fox jumps over the lazy dog.



Task

Write a function or method to check a sentence to see if it is a   pangram   (or not)   and show its use.



Related tasks

   determine if a string has all the same characters
   determine if a string has all unique characters


ISPANGRAM
=LAMBDA(s,
    LET(
        abc, CHARS(LOWER("abcdefghijklmnopqrstuvwxyz")),
        AND(
            LAMBDA(c,
                ISNUMBER(SEARCH(c, s, 1))
            )(
                abc
            )
        )
    )
)