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


@/.*[Aa].*&.*[Bb].*&.*[Cc].*&.*[Dd].*& \
  .*[Ee].*&.*[Ff].*&.*[Gg].*&.*[Hh].*& \
  .*[Ii].*&.*[Jj].*&.*[Kk].*&.*[Ll].*& \
  .*[Mm].*&.*[Nn].*&.*[Oo].*&.*[Pp].*& \
  .*[Qq].*&.*[Rr].*&.*[Ss].*&.*[Tt].*& \
  .*[Uu].*&.*[Vv].*&.*[Ww].*&.*[Xx].*& \
  .*[Yy].*&.*[Zz].*/