Module read

Functions to read from files.

Functions

• head
  Reads the first N bytes from a file.
• head_to_string
  Reads the first N bytes from a file and return them as a string.
• head_to_string_with_message
  Reads the first N bytes from a file and return them as a string. If the file size is greater than N bytes, the truncation message will be put at the end of the String.