Algophobia Algophobia Algophobia is a phobia of pain - an abnormal and persistent fear of pain that is far more powerful than that of a normal person. Algophobia is much more common in elderly people. It can be treated with behavioral therapy and anti-anxiety medication. The term comes from the , "álgos", "pain" and , "phóbos", "fear". According to Sabino Metta, a behavioral psychologist, the phobic reaction is a learned behavior. A common example of this would be an elderly person who hears about all of their friends suffering from various ailments and pains. This person will begin to anticipate the
Persistent array if "array" were only partially persistent, the creation of "other_array" would be forbidden, however, the creation of last_array would still be valid. Indeed, "updated_array" is an array distinct from "array" and has never been updated before the creation of "last_array". Many implementations of persistent arrays exists. In this section, the positive natural number "n" will always be the size of the persistent array. Three implementations are discussed below. The first ones are the easiest one to implement, while the last ones are the more efficient. The simplest implementation of a fully persistent array of size "n" consist in using an