Moilanen's (1995) study of adolescent depression also attempts to validate Beck's theory in a new way, as Beck worked mostly with adults. Indeed, she found that the student's depression was often associated with dysfunctional beliefs and negative future attitudes.
A hash code is a numeric value that is used to insert and identify an object in a hash-based collection such as the Dictionary<TKey, TValue> class, the Hashtable class, or a type derived from the DictionaryBase class.
If you want to file something away for later retrieval, it can be faster if you file it numerically rather than by a long alphabetic key. A hashCode is a way of computing a small (32-bit) digest numeric key from a long String or even an arbitrary clump of bytes.