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In computing, natural sort order (or natural sorting) is the ordering of strings in alphabetical order, except that multi-digit numbers are treated atomically, i.e., as if they were a single character. Natural sort order has been promoted as being more human-friendly ("natural") than machine-oriented, pure alphabetical sort order.
For example, you might have a table displaying names, dates, or numerical data. By making the table sortable, you allow readers to click on the column header to sort by, for example, alphabetical order (A–Z or Z–A) for names, chronological order for dates, or numerical order for numbers (low to high or high to low).
For example, the items are books, the sort key is the title, subject or author, and the order is alphabetical. A new sort key can be created from two or more sort keys by lexicographical order. The first is then called the primary sort key, the second the secondary sort key, etc.
In mathematics, the lexicographic or lexicographical order (also known as lexical order, or dictionary order) is a generalization of the alphabetical order of the dictionaries to sequences of ordered symbols or, more generally, of elements of a totally ordered set. There are several variants and generalizations of the lexicographical ordering.
Alphabetical order is the basis for many systems of collation where items of information are identified by strings consisting principally of letters from an alphabet.The ordering of the strings relies on the existence of a standard ordering for the letters of the alphabet in question.
Unfortunately, the ability to sort by "From," "Subject," or "Date" is no longer supported if you use the New/Old style of inbox. If you want to sort your messages this way, switch to the Unified Inbox style.
The terms are evaluated and compared in order. The operation has short-circuit semantics, meaning that evaluation is guaranteed to stop as soon as a verdict is clear: if a < b is false, c is never evaluated as the expression cannot possibly be true anymore. For expressions without side effects, a < b < c is equivalent to a < b and b < c ...
In mathematics, lexicographical order is a means of ordering sequences in a manner analogous to that used to produce alphabetical order. [16] Some computer applications use a version of alphabetical order that can be achieved using a very simple algorithm, based purely on the ASCII or Unicode codes for characters. This may have non-standard ...