enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Magic number (programming) - Wikipedia

    en.wikipedia.org/wiki/Magic_number_(programming)

    In the Sixth Edition source code of the Unix program loader, the exec() function read the executable image from the file system. The first 8 bytes of the file was a header containing the sizes of the program (text) and initialized (global) data areas.

  3. Bytecode - Wikipedia

    en.wikipedia.org/wiki/Bytecode

    Bytecode (also called portable code or p-code) is a form of instruction set designed for efficient execution by a software interpreter.Unlike human-readable [1] source code, bytecodes are compact numeric codes, constants, and references (normally numeric addresses) that encode the result of compiler parsing and performing semantic analysis of things like type, scope, and nesting depths of ...

  4. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    MPEG-1 video and MPEG-2 video (MPEG-1 Part 2 and MPEG-2 Part 2) 66 74 79 70 69 73 6F 6D: ftypisom: 4 mp4 ISO Base Media file (MPEG-4) 66 74 79 70 4D 53 4E 56: ftypMSNV: 4 mp4 MPEG-4 video file 78 01: x␁ 0 zlib No Compression (no preset dictionary) 78 5E: x^ Best speed (no preset dictionary) 78 9C: xœ: Default Compression (no preset ...

  5. Serialization - Wikipedia

    en.wikipedia.org/wiki/Serialization

    Flow diagram. In computing, serialization (or serialisation, also referred to as pickling in Python) is the process of translating a data structure or object state into a format that can be stored (e.g. files in secondary storage devices, data buffers in primary storage devices) or transmitted (e.g. data streams over computer networks) and reconstructed later (possibly in a different computer ...

  6. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The client has asked for a portion of the file (byte serving), but the server cannot supply that portion. For example, if the client asked for a part of the file that lies beyond the end of the file. Called "Requested Range Not Satisfiable" previously. [16]: §10.4.17 417 Expectation Failed

  7. Type conversion - Wikipedia

    en.wikipedia.org/wiki/Type_conversion

    For example, 32 contiguous bits may be treated as an array of 32 Booleans, a 4-byte string, an unsigned 32-bit integer or an IEEE single precision floating point value. Because the stored bits are never changed, the programmer must know low level details such as representation format, byte order, and alignment needs, to meaningfully cast.

  8. Executable and Linkable Format - Wikipedia

    en.wikipedia.org/wiki/Executable_and_Linkable_Format

    An ELF file has two views: the program header shows the segments used at run time, whereas the section header lists the set of sections.. In computing, the Executable and Linkable Format [2] (ELF, formerly named Extensible Linking Format) is a common standard file format for executable files, object code, shared libraries, and core dumps.

  9. Byte order mark - Wikipedia

    en.wikipedia.org/wiki/Byte_order_mark

    The byte-order mark (BOM) is a particular usage of the special Unicode character code, U+FEFF ZERO WIDTH NO-BREAK SPACE, whose appearance as a magic number at the start of a text stream can signal several things to a program reading the text: [1] the byte order, or endianness, of the text stream in the cases of 16-bit and 32-bit encodings;