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  2. Product key - Wikipedia

    en.wikipedia.org/wiki/Product_key

    The 25 characters of the Product Key form a base-24 encoding of the binary representation of the Product Key. The Product Key is a multi-precision integer of roughly 115 bits, which is stored in little endian byte order in an array of 15 bytes. Of these 15 bytes the least significant four bytes contain the Raw Product Key in little endian byte ...

  3. B-tree - Wikipedia

    en.wikipedia.org/wiki/B-tree

    For this purpose, m - 1 keys from the current node, the new key inserted, one key from the parent node and j keys from the sibling node are seen as an ordered array of m + j + 1 keys. The array becomes split by half, so that ⌊ ( m + j + 1)/2 ⌋ lowest keys stay in the current node, the next (middle) key is inserted in the parent and the rest ...

  4. Algebraic data type - Wikipedia

    en.wikipedia.org/wiki/Algebraic_data_type

    One of the most common examples of an algebraic data type is the singly linked list. A list type is a sum type with two variants, Nil for an empty list and Cons x xs for the combination of a new element x with a list xs to create a new list. Here is an example of how a singly linked list would be declared in Haskell:

  5. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    EVTX – Windows XML EventLog files are system log files used by the Windows operating system [9] EZW – Reagency Systems easyOFFER document [10] FDX – Final Draft; FTM – Fielded Text Meta; FTX – Fielded Text (Declared) GDOC – Google Drive Document; GUIDE – AmigaGuide; HTML, HTM – HyperText Markup Language

  6. Microsoft Product Activation - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Product_Activation

    On Windows 10 and Windows 11, the activation process can also generate a "digital entitlement", which allows the operating system's hardware and license status to be saved to the activation servers, so that the operating system's license can automatically be restored after a clean installation without the need to enter a product key.

  7. Foreach loop - Wikipedia

    en.wikipedia.org/wiki/Foreach_loop

    In Raku, a sister language to Perl, for must be used to traverse elements of a list (foreach is not allowed). The expression which denotes the collection to loop over is evaluated in list-context, but not flattened by default, and each item of the resulting list is, in turn, aliased to the loop variable(s). List literal example:

  8. Computer programming - Wikipedia

    en.wikipedia.org/wiki/Computer_programming

    Computer programming or coding is the composition of sequences of instructions, called programs, that computers can follow to perform tasks. [1] [2] It involves designing and implementing algorithms, step-by-step specifications of procedures, by writing code in one or more programming languages.

  9. Windows Registry - Wikipedia

    en.wikipedia.org/wiki/Windows_Registry

    The Windows Registry is a hierarchical database that stores low-level settings for the Microsoft Windows operating system and for applications that opt to use the registry. . The kernel, device drivers, services, Security Accounts Manager, and user interfaces can all use the regis