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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The request was well-formed (i.e., syntactically correct) but could not be processed. [1]: §15.5.21 423 Locked (WebDAV; RFC 4918) The resource that is being accessed is locked. [7] 424 Failed Dependency (WebDAV; RFC 4918) The request failed because it depended on another request and that request failed (e.g., a PROPPATCH). [7]

  3. Callback (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Callback_(computer...

    September 2015) (Learn how and when to remove this message) A callback is often back on the level of the original caller. In computer programming , a callback is a function that is stored as data (a reference ) and designed to be called by another function – often back to the original abstraction layer .

  4. Kotlin (programming language) - Wikipedia

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

    Kotlin on Android is seen as beneficial for its null-pointer safety, as well as for its features that make for shorter, more readable code. [48] In addition to its prominent use on Android, Kotlin is gaining traction in server-side development. The Spring Framework officially added Kotlin support with version 5, on 4 January 2017. [49]

  5. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    This status is also returned if the domain in the Request-URI does not match any of the domains handled by the recipient of the request. [1]: §21.4.5 405 Method Not Allowed The method specified in the Request-Line is understood, but not allowed for the address identified by the Request-URI. [1]: §21.4.6 406 Not Acceptable

  6. Base64 - Wikipedia

    en.wikipedia.org/wiki/Base64

    The MIME (Multipurpose Internet Mail Extensions) specification lists Base64 as one of two binary-to-text encoding schemes (the other being quoted-printable). [5] MIME's Base64 encoding is based on that of the RFC 1421 version of PEM: it uses the same 64-character alphabet and encoding mechanism as PEM and uses the = symbol for output padding in ...

  7. Type–length–value - Wikipedia

    en.wikipedia.org/wiki/Type–length–value

    A binary code, often simply alphanumeric, which indicates the kind of field that this part of the message represents; Length The size of the value field (typically in bytes); Value Variable-sized series of bytes which contains data for this part of the message. Some advantages of using a TLV representation data system solution are:

  8. RocksDB - Wikipedia

    en.wikipedia.org/wiki/RocksDB

    RocksDB is a high performance [2] [3] [4] [5] [6] embedded database for key-value data. It is a fork of Google's LevelDB optimized to exploit multi-core processors ...

  9. Async/await - Wikipedia

    en.wikipedia.org/wiki/Async/await

    Swift added support for async/await with version 5.5 in 2021, adding 2 new keywords async and await. This was released alongside a concrete implementation of the Actor model with the actor keyword [ 12 ] which uses async/await to mediate access to each actor from outside.