This simple example illustrates a few reasons why functions are a brilliant idea, and have become fundamental building blocks in many programming languages: 1  Functions enable you to reuse parts of your program. 2  Functions make understanding the program easier because they give a name and a structure to a set of instructions.
How to keep your PPL(A) Current. Once you have obtained your JAA PPL it remains valid for five years provided that you keep your medical certificate and fly enough hours each year to keep your certificate of experience current. Your certificate of experience is part of your licence and is valid for two years.
In general, you don't need to keep bills around for more than a few months. The exceptions are: anything that was itemized on your federal or state income taxes. You want to keep these around for seven years in case of an audit by the IRS. brokerage statements buying/selling stocks, bonds, mutual funds, etc. You need to know how much you bought a stock for when you sell it, to calculate capital gains. information relating to major renovations to your house.