Pipe Fail (trypipe)

Checks for non-zero exits of each function in a pipeline

Description

trypipe checks the state of each function and exits the block if any of them fail. Where trypipe differs from regular try blocks is trypipe will check every process along the pipeline as well as the terminating function (which try only validates against). The downside to this is that piped functions can no longer run in parallel.

Usage

trypipe { code-block } -> <stdout>

<stdin> -> trypipe { -> code-block } -> <stdout>

Examples

trypipe {
    out "Hello, World!" -> grep: "non-existent string" -> cat
    out "This command will be ignored"
}

Formated pager (less) where the pager isn’t called if the formatter (pretty) fails (eg input isn’t valid JSON):

func pless {
    -> trypipe { -> pretty -> less }
}

Detail

A failure is determined by:

You can see which run mode your functions are executing under via the fid-list command.

See Also


This document was generated from builtins/core/structs/try_doc.yaml.

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Last built on Wed Jul 2 22:12:32 UTC 2025 against commit bb72b6fbb72b6fdd502f835172d7d06207ba4ec2c70886c.

Current version is 7.0.2107 (develop) which has been verified against tests cases.