IBM Visualization Data Explorer User's Reference

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ForEachN

Category

Flow Control

Function

Iterates through the specified set of integers.

Syntax

current, last = ForEachN(start, end, delta);

Inputs
Name Type Default Description
start integer none value of the first integer through the loop
end integer none value of the last integer through the loop
delta integer 1 numerical interval between successive integers output by the loop

Outputs
Name Type Description
current integer the current integer
last flag status of loop

Functional Details

This module initiates an iteration for each integer in the set unless execution is terminated earlier by Done. Its function is similar to that of a "for" in standard programming languages. In the user interface, this module would usually be part of a macro, and only the contents of the macro would be executed for each iteration of the loop. If this module is placed in the top level visual program, the entire program will be executed during the loop.

Typically, loops are initiated with ForEachMember or ForEachN, although they can also be implemented with a Get/Set pair and Done.

Note: If this module is used in the scripting language, the results are defined only if they are used inside a macro.

start

is the value of the first integer of the loop

end

is the value of the last integer of the loop

delta

is the interval between successive integers of the loop

This module has two outputs:

current

is the value of the integer currently being iterated.

last

is a flag indicating whether or not this is the last iteration through the loop.

Example Macro and Program

FactorialMacro.net
Factorial.net

See Also

 Done,  First,  ForEachMember,  GetGlobal,  GetLocal,  SetGlobal,  SetLocal

 Chapter 4. "Data Explorer Execution Model" in IBM Visualization Data Explorer User's Guide.


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