Copy a step from another pipeline — pip_add

Copies one step from pipeline y into pipeline x, preserving its function, parameters, group, tags, and dependency links.

Usage

pip_add_from(x, y, step)

Arguments

x: Target pipeflow pipeline object.
y: Source pipeflow pipeline object.
step: Step name to copy from y.

Value

The updated target pipeline, invisibly.

Examples

# Build a source pipeline with reusable steps
src <- pip_new("source") |>
  pip_add("load", \(n = 3) seq_len(n)) |>
  pip_add("square", \(x = ~load) x^2)

# Copy steps into a new pipeline one at a time.
# The dependency of "square" on "load" is re-established automatically.
dst <- pip_new("target")
pip_add_from(dst, src, "load")
pip_add_from(dst, src, "square")
pip_run(dst)
#> info [2026-06-07 15:34:06.508 UTC]: Start run of pipeflow_pip 'target'
#> info [2026-06-07 15:34:06.508 UTC]: Step 1/2 load
#> info [2026-06-07 15:34:06.509 UTC]: Step 2/2 square
#> info [2026-06-07 15:34:06.510 UTC]: Finished run of pipeflow_pip 'target'
pip_collect_out(dst)
#> $load
#> [1] 1 2 3
#> 
#> $square
#> [1] 1 4 9
#>