For Loop

For Loop

Type: for-loop  ·  Package: Core Activities v1.0.0

Repeats a block of activities a counted number of times, keeping a numerical rate that increases with each round. Use it when you know how many times to loop (scroll 10 pages, generate 5 reports) and you’re not looping through the elements of a collection.

How it works

Count from from (included) to to (excluded), adding step on each lap. In each iteration it saves the current value in the variable indexVariable and executes activities.

from = 0, to = 3, step = 1   →   índice toma 0, 1, 2   (3 vueltas; el 3 NO se ejecuta)
from = 1, to = 11, step = 1  →   índice toma 1, 2, …, 10  (10 vueltas)
from = 0, to = 10, step = 2  →   índice toma 0, 2, 4, 6, 8

Supports Break and Continue inside the body.

Required parameters

Parameter	Editor	Description
from	number	Initial index (included).
to	number	End Index (excluded): The loop runs as long as index < to.

Optional parameters

Parameter	Editor	Description
step	number	How much the index increases per lap. By default 1.
indexVariable	nombre de variable	Variable with the current index. By default i.

Subflows (lanes)

activities requerido

Activities that are executed in each lap.

Example

Go through the first 5 pages of a web listing:

For Loop   from = 1   to = 6   indexVariable = pagina
 └─ activities:
      Page Navigate   url = = "https://erp.cliente.com/listdo?page=" + pagina
      Log             level = info   message = = "Procesando página " + pagina

The to is exclusive

To repeat N times starting at 1, use from = 1, to = N+1. To start at 0, use from = 0, to = N. If you wait 5 turns and only see 4, it’s almost always because the to (exclusive) is one short.

Work with integers

from, to and step are interpreted as whole numbers. The index is a number that you can use in expressions (= "página " + pagina).

Related activities

• For Each — when you loop through the items of a list or table, not a count.
• While — when you don’t know how many turns, but depend on a condition.
• Break / Continue — break out of the loop or jump to the next lap.