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  2. Data validation - Wikipedia

    en.wikipedia.org/wiki/Data_validation

    This check is essential for programs that use file handling. Format check Checks that the data is in a specified format (template), e.g., dates have to be in the format YYYY-MM-DD. Regular expressions may be used for this kind of validation. Presence check Checks that data is present, e.g., customers may be required to have an email address ...

  3. Maildir - Wikipedia

    en.wikipedia.org/wiki/Maildir

    The Maildir e-mail format is a common way of storing email messages on a file system, rather than in a database. Each message is assigned a file with a unique name, and each mail folder is a file system directory containing these files. Maildir was designed by Daniel J. Bernstein circa 1995, with a major goal of eliminating the need for program ...

  4. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    However, some file signatures can be recognizable when interpreted as text. The column ISO 8859-1 shows how the file signature appears when interpreted as text in the common ISO 8859-1 encoding, with unprintable characters represented as the control code abbreviation or symbol, or codepage 1252 character where available, or a box otherwise. In ...

  5. AOL Mail

    mail.aol.com

    Absolutely! It's quick and easy to sign up for a free AOL account. With your AOL account you get features like AOL Mail, news, and weather for free!

  6. 16-line message format - Wikipedia

    en.wikipedia.org/wiki/16-line_message_format

    16-line message format. 16-line message format, or Basic Message Format, is the standard military radiogram format (in NATO allied nations) for the manner in which a paper message form is transcribed through voice, Morse code, or TTY transmission formats. The overall structure of the message has three parts: HEADING (which can use as many as 10 ...

  7. Block and unblock email addresses in AOL Mail - AOL Help

    help.aol.com/articles/block-and-unblock-email...

    Block email addresses. 1. Open an email or select it from your mailbox. 2. Click the More icon. 2. Click Block Senders. 2. Optionally, select to also delete emails you've received from the sender.

  8. Python (programming language) - Wikipedia

    en.wikipedia.org/wiki/Python_(programming_language)

    Python is a multi-paradigm programming language. Object-oriented programming and structured programming are fully supported, and many of their features support functional programming and aspect-oriented programming (including metaprogramming [ 70] and metaobjects ). [ 71] Many other paradigms are supported via extensions, including design by ...

  9. Internet Message Access Protocol - Wikipedia

    en.wikipedia.org/wiki/Internet_Message_Access...

    e. In computing, the Internet Message Access Protocol ( IMAP) is an Internet standard protocol used by email clients to retrieve email messages from a mail server over a TCP/IP connection. [ 1 ] IMAP is defined by RFC 9051 . IMAP was designed with the goal of permitting complete management of an email box by multiple email clients, therefore ...