ActionScript , C , CFML, Ch, Cobra, C++ , D, Go, Haxe, Java, JavaScript, Julia, Lingo, Lua, Nim, Objective-C, Perl, Python, R, Ruby, Rust, SwiftSlicing The following list contains syntax examples of how a range of element of an array can be accessed. - the index of the first element in the slice - the index of the last element in the slice - one more than the index of last element in the slice - the length of the slice - the number of array elements in each Format Languages ALGOL 68, Julia APL Python, Go Pascal, Object Pascal, Delphi , Nim Windows PowerShell Perl Ruby Red Ada Fortran, GNU Octave, MATLAB Mathematica, Wolfram Language S-Lang F# Haxe, JavaScript, Scala CFML PHP Common Lisp ISLISP OCaml Objective-C Programming language Default base index Specifiable index type Specifiable base index Bound check Multidimensional Dynamically-sized Vectorized operations Ada index type yes yes checked yes init some, others definable ALGOL 68 1 no yes varies yes yes user definable APL 1 ? 0 or 1 checked yes yes yes AWK 1 yes, implicitly no unchecked yes, as delimited string yes, rehashed no BASIC 0 ? no checked no init ? C 0 no no unchecked partially init, heap no Ch 0 no no checked yes, also array of array init, heap yes C++ 0 no no unchecked yes, also array of array heap no C# 0 no partial checked yes heap yes CFML 1 no no checked yes, also array of array yes no COBOL 1 no no checked array of array no some intrinsics Cobra 0 no no checked array of array heap ? Common Lisp 0 ? no checked yes yes yes D 0 yes no varies yes yes ? F# 0 no partial checked yes heap yes FreeBASIC 0 no yes checked yes init, init ? Fortran 1 yes yes varies yes yes yes FoxPro 1 ? no checked yes yes ? Go 0 no no checked array of array no no Hack 0 yes yes checked yes yes yes Haskell 0 yes yes checked yes, also array of array init ? IDL 0 ? no checked yes yes yes ISLISP 0 ? no checked yes init yes J 0 ? no checked yes yes yes Java 0 no no checked array of array init ? JavaScript 0 no no checked array of array yes yes Julia 1 yes yes checked yes yes yes Lingo 1 ? ? unchecked yes yes yes Ring 1 ? partial checked array of array yes ? Lua 1 ? partial checked array of array yes ? Mathematica 1 no no checked yes yes yes MATLAB 1 ? no checked yes yes yes Nim 0 yes yes optional array of array yes yes Oberon 0 ? no checked yes no ? Oberon-2 0 ? no checked yes yes ? Objective-C 0 no no checked array of array yes no OCaml 0 no no checked by default array of array init ? Pascal, Object Pascal index type yes yes varies yes varies some Perl 0 no yes checked array of array yes no Raku 0 no no checked yes yes yes PHP 0 yes yes checked yes yes yes PL/I 1 ? yes checked yes no ? Python 0 no no checked array of array yes no RPG 1 no no ? no no ? R 1 ? ? ? ? ? ? Ruby 0 no no checked array of array yes ? Sass 1 no no checked array of array init ? S-Lang 0 ? no checked yes yes yes Scala 0 no no checked array of array init yes Scheme 0 ? no checked array of array init yes Smalltalk 1 ? no checked array of array yes ? Swift 0 no no checked array of array yes ? Visual Basic 0 no yes checked yes yes ? Visual Basic.NET 0 no partial checked yes yes yes Wolfram Language 1 no no checked yes yes yes Windows PowerShell 0 no no checked yes heap ? Xojo 0 no no checked yes yes no XPath/XQuery 1 no no checked array of array yes yes Programming language Default base index Specifiable index type Specifiable base index Bound check Multidimensional Dynamically-sized Vectorized operations
Vectorized array operations Some compiled languages such as Ada and Fortran, and some scripting languages such as IDL, MATLAB, and S-Lang, have native support for vectorized operations on arrays. For example, to perform an element by element sum of two arrays, and to produce a third, it is only necessary to writemathematical functions such as sine . For example, if is an array, theneven and odd entries of an array. Another common use of vectorized indices is a filtering operation. Consider a clipping operation of a sine wave where amplitudes larger than 0.5 are to be set to 0.5. Using S-Lang, this can be done by
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