Summary of Programming Constructs

Analytica User GuideProcedural ProgrammingSummary of Programming Constructs

Please see the table below for a list of Analytica programming constructs, their meanings, and links to references with more details, if available.

Construct	Meaning:	For more, see
e1; e2; … ei	Semicolons join a group of expressions to be evaluated in sequence	Begin-End for Grouping Expressions
BEGIN e1; e2; … ei END	A group of expressions to be evaluated in sequence	Begin-End for Grouping Expressions
(e1; e2; … ei)	Another way to group expressions	Begin-End for Grouping Expressions
m .. n	Generates a list of successive integers from m to n	Functions Expecting Atomic Parameters
Var x := e	Define local variable x and assign initial value e	Defining a Local Variable
Index i := e	Define local index i and assign initial value e	Local Indexes
x := e	Assigns value from evaluating e to local variable x. Returns value e.	Assigning to a Local Variable
While Test Do Body	While Test is True, evaluate Body and repeat. Returns last value of Body.	While(Test) Do Body
{ comments } /* comments */	Curly brackets { } and /* */ are alternative ways to enclose comments to be ignored by the parser.	Procedural Programming Example
'text' "text"	You can use single or double quotes to enclose a literal text value, but they must match.	Text Values
For x := a DO e	Assigns to loop variable x, successive atoms from array a and repeats evaluation expression e for each value of x. Returns an array of values of e with the same indexes as a.	For i := a Do expr
For x[i, j…] := a DO e	Same, but it assigns to x successive sub-arrays of a, each indexed by the indices, [i, j …	For i := a Do expr
\ e	Creates a reference to the value of expression e.	References and Data Structures
\ [i, j …] e	Creates an array indexed by any indexes of e other than i, j … of references to sub-arrays of e each indexed by i, j ….	References and Data Structures
# r	Returns the value referred to by reference r.	References and Data Structures

Procedural Programming ExampleSummary of Programming ConstructsBegin-End for Grouping Expressions