funk-shun questions

• $> and $? in Perl
• Possible to add spacing every 4 characters in vi?
• Vi - ":call append()"
• How to put a transparent image over a div without affecting the layout of the page?
• Is it faster to union sets or check the whole list for a duplicate?
• How to take two lists and combine them excluding any duplicates?
• Dictionary = Hash?
• Can perl do multiplying a string like python? [duplicate]
• How to make a parent div grow with its children?
• How to make a div grow with content?

funk-shun answers