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.
Nearly all of your financial papers can be divided into three categories: records that you need to keep only for the calendar year or less, papers that you need to save for seven years (the typical window during which your tax return may be audited), and papers that you should hang onto indefinitely.early all of your financial papers can be divided into three categories: records that you need to keep only for the calendar year or less, papers that you need to save for seven years (the typical window during which your tax return may be audited), and papers that you should hang onto indefinitely.