err)Print a line to the stderr
Write parameters to stderr with a trailing new line character.
err string to write -> <stderr>» err Hello, World!
Hello, World!err outputs as string data-type. This can be changed by casting
err { "Code": 404, "Message": "Page not found" } ? cast jsonHowever passing structured data-types along the stderr stream is not recommended as any other function within your code might also pass error messages along the same stream and thus taint your structured data. This is why Murex does not supply a tout function for stderr. The recommended solution for passing messages like these which you want separate from your stdout stream is to create a new Murex named pipe.
» pipe --create messages
» bg { <messages> -> pretty }
» tout <messages> json { "Code": 404, "Message": "Page not found" }
» pipe --close messages
{
"Code": 404,
"Message": "Page not found"
}err supports ANSI constants.
errbg): Run processes in the backgroundpipe): Manage Murex named pipescast): Alters the data-type of the previous function without altering its outputpt): Pipe telemetry. Writes data-types and bytes writtenout): Print a string to the stdout with a trailing new line charactertout): Print a string to the stdout and set it’s data-type<pipe>): Reads from a Murex named pipe>): Writes stdin to disk - overwriting contents if file already exists(brace quote): Write a string to the stdout without new line (deprecated)>> Append File: Writes stdin to disk - appending contents if file already existsThis document was generated from builtins/core/io/echo_doc.yaml.
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Last built on Tue Dec 10 22:56:57 UTC 2024 against commit 60f05a260f05a227caf73dd5b3478e3cb3f4bb24e46745b.
Current version is 6.4.1005 (develop) which has been verified against tests cases.