![]() ![]() Key Terms array A data type that is meant to describe a collection of elements (values or variables), each selected by one or more indices (identifying keys) that can be computed at run time by the program. The Format-List cmdlet formats hash table output as a list of separate key-value pairs.The Format-Table cmdlet formats hash table output as a table.PowerShell hash table values are removed using $table.Remove(key) syntax.PowerShell hash table values are added using $table.Add(key, value) syntax or $table.key = value syntax.An empty PowerShell hash table is created using.Hash table values are accessed using $table.key syntax.PowerShell hash tables are initialized using = value key = value} syntax. ![]() PowerShell multi-dimensional array elements are accessed using $array syntax.PowerShell array elements are removed using $array = $array + $array syntax.PowerShell array elements are added using $array += element syntax.An empty PowerShell array is created using.PowerShell array elements are accessed using $array syntax.PowerShell arrays are initialized using value) syntax.An associative array is an abstract data type composed of a collection of (key, value) pairs, such that each possible key appears at most once in the collection.A hash table uses a hash function to compute an index into an array of buckets or slots, from which the correct value can be found.A hash table is a data structure used to implement an associative array, a structure that can map keys to values.Index checking means that, in all expressions indexing an array, the index value is checked against the bounds of the array (which were established when the array was defined), and if the index is out-of-bounds, further execution is suspended via some sort of error.Dynamic arrays are resizable and may be expanded at any time after creation, without changing the values of the current elements.The number of indices needed to specify an element is called the dimension, dimensionality, or rank of the array type.Array indexes start at either zero or one, depending on the programming language, and correspondingly end at either the number of elements minus one or at the number of elements. ![]()
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