The negation of a disjunction is the conjunction of the negations and The negation of a conjunction is the disjunction of the negations.
If you have `if`s nested in this way: ``` if a if b 1 else 2 end else 3 end ``` You can flatten and simplify them into this: ...
How to run PostgreSQL if it isn't starting because 'postmaster.pid' already exists
OK, it seems obvious but I always spend several minutes finding it. So I think it's a good idea to put it here.
A quick guide how to include any file, in this case logo to devise messages
Labelary is an online ZPL (Zebra Programming Language) editor and viewer
Dillinger is an online markdown editor