collect for core

Signature

> collect {flags} (closure)

Flags

• --keep-env: Let the closure affect environment variables.

Parameters

• closure: The closure to run once the stream is collected.

Input/output types:

Examples

Use the second value in the stream.

> [1 2 3] | collect { |x| $x.1 }
2

Read and write to the same file.

> open file.txt | collect | save -f file.txt

Notes

If provided, run a closure with the collected value as input.

The entire stream will be collected into one value in memory, so if the stream is particularly large, this can cause high memory usage.