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.
I have heard for bills, 1 year. For bank statements, I keep them 7 years (because I don't know what to do with them).Although the exception to that is mortgage and car payments. I've heard to keep copies of those canceled checks for the entire time you own the house or car.'ve done this for 8 years w/ no problem. Also most bills/cc you can look at at least 6 mths of statements online and even more if you go to paperless. I do keep all of my health papers just in case. It helps.