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 Wed Sep 18 21:18:57 UTC 2024 against commit c037883c03788357164e9846c84d9f777251495d9452a8e.
Current version is 6.3.4225 (develop) which has been verified against tests cases.