Re: List vs. array in Mathematica

*To*: mathgroup at smc.vnet.net*Subject*: [mg132575] Re: List vs. array in Mathematica*From*: Richard Fateman <fateman at cs.berkeley.edu>*Date*: Sun, 13 Apr 2014 05:26:57 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com*Delivered-to*: l-mathgroup@wolfram.com*Delivered-to*: mathgroup-outx@smc.vnet.net*Delivered-to*: mathgroup-newsendx@smc.vnet.net*References*: <lib06v$i5p$1@smc.vnet.net>

On 4/12/2014 2:15 AM, andymhancock at gmail.com wrote: > In mathematica, is an array simply a list of uniform depth? No. An Array is a List. For example, z= Array[f,4] returns{f[1],f[2],f[3],f[4]} Head[z] returns List z[[2]]={1,{2,3}} is perfectly legal. Note, there is a program Array[ ] which can be used to initially construct Lists. Both > terms are used in the documentation, but I haven't run across an > explicit explanation of why two terms are needed for the same > construct. They aren't. The term "array" is used in computer science and conventional programming languages for a different data structure with different storage requirements and different access efficiencies. So I'm wondering if their relationship is. > Their relationship with respect to Mathematica is: the proprietors of the program define arrays as lists, ignoring conventions in computer science. One can speculate as to why. See http://en.wikipedia.org/wiki/Hanlon%27s_razor