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- Iliffe_vector abstract "In computer programming, an Iliffe vector, also known as a display, is a data structure used to implement multi-dimensional arrays. An Iliffe vector for an n-dimensional array (where n > 2) consists of a vector (or 1-dimensional array) of pointers to an (n − 1)-dimensional array. They are often used to avoid the need for expensive multiplication operations when performing address calculation on an array element. They can also be used to implement triangular arrays, or other kinds of irregularly shaped arrays. The data structure is named after John K. Iliffe.Their disadvantages include the need for multiple chained pointer indirections to access an element, and the extra work required to determine the next row in an n-dimensional array to allow an optimising compiler to prefetch it. Both of these are a source of delays on systems where the CPU is significantly faster than main memory.The Iliffe vector for a 2-dimensional array is simply a vector of pointers to vectors of data, i.e., the Iliffe vector represents the columns of an array where each column element is a pointer to a row vector.Multidimensional arrays in languages such as Java, Python (multidimensional lists), Ruby, Visual Basic .NET, Perl, PHP, JavaScript, Objective-C, and Atlas Autocode are implemented as Iliffe vectors.Iliffe vectors are contrasted with dope vectors in languages such as Fortran, which contain the stride factors and offset values for the subscripts in each dimension.".
- Iliffe_vector wikiPageID "1696737".
- Iliffe_vector wikiPageRevisionID "602954388".
- Iliffe_vector hasPhotoCollection Iliffe_vector.
- Iliffe_vector subject Category:Arrays.
- Iliffe_vector type Abstraction100002137.
- Iliffe_vector type Arrangement107938773.
- Iliffe_vector type Array107939382.
- Iliffe_vector type Arrays.
- Iliffe_vector type Group100031264.
- Iliffe_vector comment "In computer programming, an Iliffe vector, also known as a display, is a data structure used to implement multi-dimensional arrays. An Iliffe vector for an n-dimensional array (where n > 2) consists of a vector (or 1-dimensional array) of pointers to an (n − 1)-dimensional array. They are often used to avoid the need for expensive multiplication operations when performing address calculation on an array element.".
- Iliffe_vector label "Iliffe vector".
- Iliffe_vector sameAs m.05p4rm.
- Iliffe_vector sameAs Q16352367.
- Iliffe_vector sameAs Q16352367.
- Iliffe_vector sameAs Iliffe_vector.
- Iliffe_vector wasDerivedFrom Iliffe_vector?oldid=602954388.
- Iliffe_vector isPrimaryTopicOf Iliffe_vector.