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


pangram(s)={
  s=vecsort(Vec(s),,8);
  for(i=97,122,
    if(!setsearch(s,Strchr(i)) && !setsearch(s,Strchr(i-32)),
      return(0)
    )
  );
  1
};
 
pangram("The quick brown fox jumps over the lazy dog.")
pangram("The quick brown fox jumps over the lazy doe.")