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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    This class of status code indicates the client must take additional action to complete the request. Many of these status codes are used in URL redirection. [2]A user agent may carry out the additional action with no user interaction only if the method used in the second request is GET or HEAD.

  3. React (software) - Wikipedia

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

    The introduction of React Hooks with React 16.8 in February 2019 allowed developers to manage state and lifecycle behaviors within functional components, reducing the reliance on class components. This trend aligns with the broader industry movement towards functional programming and modular design.

  4. HTTP 403 - Wikipedia

    en.wikipedia.org/wiki/HTTP_403

    If the user does not provide valid credentials or if the authentication fails, a 403 status code is returned. IP restrictions: The server may also restrict access to specific IP addresses or IP ranges. If the user's IP address is not included in the list of permitted addresses, a 403 status code is returned.

  5. Syntax error - Wikipedia

    en.wikipedia.org/wiki/Syntax_error

    For example, some would say that the use of an uninitialized variable's value in Java code is a syntax error, but many others would disagree [1] [2] ...

  6. Read code - Wikipedia

    en.wikipedia.org/wiki/Read_code

    The first version was developed in the early 1980s by Dr James Read, a Loughborough general medical practitioner. [2] The scheme was structured similarly to ICD-9: . each code was composed of four consecutive characters: first character 0-9, A-Z (excepting I and O), remaining three characters 0-9, A-Z/a-z (excepting i,I,o and O) plus up to three trailing period '.' characters