Editing Euphoria (programming language) (section)

==Data types==
Euphoria has two basic data types:
:Atom – A number, implemented as a 31-bit signed [[integer]] or a 64-bit [[IEEE floating-point standard|IEEE floating-point]]. Euphoria dynamically changes between integer and floating point representation according to the current value.
:Sequence – A [[Array data type|vector]] (array) with zero or more elements. Each element may be an ''atom'' or another ''sequence''. The number of elements in a sequence is not fixed (i.e., the size of the vector/array does not have to be declared). The program may add or remove elements as needed during run-time. Memory allocation-deallocation is automatically handled by reference counting. Individual elements are referenced using an index value enclosed in square brackets. The first element in a sequence has an index of one [1]. Elements inside embedded sequences are referenced by additional bracked index values, thus X[3][2] refers to the second element contained in the sequence that is the third element of X. Each element of a sequence is an ''object'' type (see below).

Euphoria has two additional data types predefined:
:Integer – An ''atom'', restricted to 31-bit signed [[integer]] values in the range {{val|-1073741824}} to {{val|1073741823}} ({{tmath|-2^{30} }} to {{tmath|2^{30}-1}}). ''Integer'' data types are more efficient than the ''atom'' data types, but cannot contain the same range of values. Characters are stored as integers, e.g., coding [[ASCII]]-'A' is exactly the same as coding 65.
:Object – A generic datatype which may contain any of the above (i.e., ''atom'', ''sequence'' or ''integer'') and which may be changed to another type during run-time.

There is no character [[String (computer science)|string]] data type. Strings are represented by a ''sequence'' of ''integer'' values. However, because literal strings are so commonly used in programming, Euphoria interprets double-quote enclosed characters as a sequence of integers. Thus
 "ABC"
is seen as if the coder had written:
 {'A', 'B', 'C'}
which is the same as:
 {65, 66, 67}