errPrint 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.
(brace quote): Write a string to the stdout without new line (deprecated)<pipe> Read Named Pipe: Reads from a Murex named pipe>> Append File: Writes stdin to disk - appending contents if file already existsbg: Run processes in the backgroundcast: Alters the data-type of the previous function without altering its outputout: Print a string to the stdout with a trailing new line characterpipe: Manage Murex named pipespretty: Prettifies JSON to make it human readablept: Pipe telemetry. Writes data-types and bytes writtentout: Print a string to the stdout and set it’s data-type|> Truncate File: Writes stdin to disk - overwriting contents if file already existsThis document was generated from builtins/core/io/echo_doc.yaml.
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Last built on Thu Aug 15 14:38:34 UTC 2024 against commit 50ed9d650ed9d6df391240d3c2c02e623636e508dfcdad1.
Current version is 6.2.4000 which has been verified against tests cases.