Comparison of programming languages (array): Difference between revisions

Revision as of 02:00, 15 September 2023

Revision as of 09:14, 29 September 2023

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=== Array dimensions ===

The following list contains [[programming language syntax|syntax]] examples of how to determine the dimensions (index of the first element, the last element or the size in elements).

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| {{Mono|len(''name'')}} || {{Mono|0}} || {{Mono|len(''name'') - 1}}

|-

| [[Haskell (programming language)|Haskell]]

| {{Mono|rangeSize (bounds ''name'')}} || {{Mono|fst (bounds ''name'')}} || {{Mono|snd (bounds ''name'')}}

|-

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|-

| {{Mono|name''' ! '''index}}

| [[Haskell (programming language)|Haskell]]

|-

| {{Mono|'''$'''name''' ? '''index'''}}

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|-

| {{Mono|name'''['''first'''..'''last''']'''}}

| [[Pascal (programming language)|Pascal]], [[Object Pascal]], [[Delphi (programming languagesoftware)|Delphi]], [[Nim (programming language)|Nim]]

|-

| {{Mono|'''$'''name'''['''first'''..'''last''']'''}}

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| style="background:honeydew;" | yes

|-

| [[Haskell (programming language)|Haskell]]

| style="background:cornsilk;" | 0

| style="background:honeydew;" | yes<ref name="cr24"/>

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== Vectorized array operations ==

Some compiled languages such as [[Ada (programming language)|Ada]] and [[Fortran]], and some scripting languages such as [[IDL (programming language)|IDL]], [[MATLAB]], and [[S-Lang (programming library)|S-Lang]], have native support for vectorized operations on arrays. For example, to perform an element by element sum of two arrays, {{Mono|a}} and {{Mono|b}} to produce a third {{Mono|c}}, it is only necessary to write

c = a + b

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<ref name="cr5">This list is strictly comparing language features. In every language (even assembler) it is possible to provide improved array handling via add on libraries. This language has improved array handling as part of its standard library</ref>

<ref name="cr6">The class Array is fixed-size, but OrderedCollection is dynamic</ref>

<ref name="cr7">The indexing base can be 0 or 1 as per the System Variable {{Mono|⎕IO}}. This value may apply to the whole "workspace", or be localized to a user-defined function or a single primitive function by use of the Variant operator ({{Mono|⍠}}).</ref>

<ref name="cr8">At least 2 dimensions (scalar numbers are 1×1 arrays, vectors are 1×n or n×1 arrays).</ref>

<ref name="cr9">Allows creating fixed-size arrays in "unsafe" code, allowing enhanced [[interoperability]] with other language</ref>