Array: Difference between revisions

Smalltalk provides a rich set of collection classes in its base library, which is also standard (ANSI) among the different implementations. <br>The most used are:

* Array - fixed size, indexed by integer index, any kind of element

* ByteArray - an array of bytes, like Array, but only byte valued integers as elements

* String - an array of characters, like Array, but only characters as elements

* OrderedCollection - variable size, indexed by integer index, any kind of element

* Dictionary - variable size, indexed by arbitrary object as index, any kind of element

Array, ByteArray, String and all othersother collection types provide a common protocol which they inherit from their common superclass, <tt>Collection</tt>. ByteArray and String can be considered as Arrays which usewith a more compact storage representation internally (and maybut provide additional protocol eg. for case conversion or bit-array operations).

a1 occurrencesOf:10 -> 10

d1 includes:2 -> false. "is value present; attention: not O(1)"</lang>

Overall there are hundreds of methods implemented in Collection, from which all of the above inherit and which are not listed here.