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  2. Comparison of regular expression engines - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_regular...

    The primary regex crate does not allow look-around expressions. There is an Oniguruma binding called onig that does. SAP ABAP: SAP.com: Proprietary: Tcl: tcl.tk: Tcl/Tk License (BSD-style) Tcl library doubles as a regular expression library. Wolfram Language: Wolfram Research: Proprietary: usable for free on a limited scale on the Wolfram ...

  3. Email address - Wikipedia

    en.wikipedia.org/wiki/Email_address

    The format of an email address is local-part@domain, where the local-part may be up to 64 octets long and the domain may have a maximum of 255 octets. [5] The formal definitions are in RFC 5322 (sections 3.2.3 and 3.4.1) and RFC 5321—with a more readable form given in the informational RFC 3696 (written by J. Klensin, the author of RFC 5321 [6]) and the associated errata.

  4. Regular expression - Wikipedia

    en.wikipedia.org/wiki/Regular_expression

    The DFA can be constructed explicitly and then run on the resulting input string one symbol at a time. Constructing the DFA for a regular expression of size m has the time and memory cost of O(2 m), but it can be run on a string of size n in time O(n). Note that the size of the expression is the size after abbreviations, such as numeric ...

  5. ReDoS - Wikipedia

    en.wikipedia.org/wiki/ReDoS

    In the case of a web application, the programmer may use the same regular expression to validate input on both the client and the server side of the system. An attacker could inspect the client code, looking for evil regular expressions, and send crafted input directly to the web server in order to hang it.

  6. Data validation - Wikipedia

    en.wikipedia.org/wiki/Data_validation

    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. Range check

  7. Customize your mailbox font size, sender display name, and ...

    help.aol.com/articles/customize-your-mailbox...

    AOL Desktop Gold lets you personalize the look and feel of your mailbox by adjusting your mail settings to better fit your needs. Through the settings menu you can choose how a sender's display name is shown, adjust the size of the fonts in your mailbox, customize the date column in your mailbox, and more. Change your mailbox font size

  8. RE2 (software) - Wikipedia

    en.wikipedia.org/wiki/RE2_(software)

    RE2 is a software library which implements a regular expression engine. It uses finite-state machines, in contrast to most other regular expression libraries. RE2 supports a C++ interface. RE2 was implemented by Google and Google uses RE2 for Google products. [3]

  9. mailto - Wikipedia

    en.wikipedia.org/wiki/Mailto

    mailto is a Uniform Resource Identifier (URI) scheme for email addresses. It is used to produce hyperlinks on websites that allow users to send an email to a specific address directly from an HTML document, without having to copy it and entering it into an email client.

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