Array

An array is a numerically indexed collection of elements holding values.

Related concepts:  TypeValue

Closest Wikipedia entry:  Array data type

Misconceptions about Array

23 documented Misconceptions

ArrayAccessWithParentheses — Java

Parentheses are used to access an element in an array

ArrayAllocationWithoutNew — Java

Arrays are created without the new keyword

ArrayBracketCountIsLength — Java

The number of brackets in an array type or an array initializer corresponds to the length of the array

ArrayElementTypeRepeats — Java

The type of a multi-dimensional array is written as T[] T[] T[]

ArrayElementsUntyped — Java

Elements of arrays are untyped

ArrayHasLengthMethod — Java

To get the length of an array, one needs to call its length method

ArrayInitializerContentsInBrackets — Java

Array initializers list the elements in square brackets

ArrayLengthCannotBeZero — Java

An array cannot have a length of 0 elements

ArrayLengthPartOfType — Java

The length of an array is part of its type

ArrayListIsArray — Java

ArrayLists are arrays

ArrayRankIsLength — Java

Array rank and array length are the same thing

ArrayRankNotPartOfType — Java

The rank of an array is not part of its type

ArraysGrow — Java

Arrays can grow dynamically

ForEachIteratesOverIndices — Java

An enhanced for loop iterates over the indices of an array or a collection

ForEachVariableIsElement — Java

One can assign to the variable of an enhanced for statement to store a value in the corresponding array or collection element

MultidimensionalArray — Java

A multi-dimensional array is one single array object

NoJaggedArrays — Java

Multi-dimensional arrays have a rectangular shape

OnlyInnermostArrayElements — Java

Only the elements of the innermost array of a multi-dimensional array are accessible

OutOfBoundsElementsAreNull — Java

Out-of-bounds array elements are null

MapInPlace — JavaScript

Map modifies the elements of the array on which it operates in place

TypeofArrayIsArray — JavaScript

The typeof operator applied on an array returns 'array'

ListLengthCannotBeZero — Scratch

A list cannot have a length of 0 items

ListsHomogeneous — Scratch

All items in a list must have the same type