Specify Function Return Value

Specifies desired return values from a function and controls flow accordingly.

Terminal

<func_name>() { return <exit_code>; }

<func_name>() `{ return <exit_code>; `}

#!/bin/bash

# Specify Function Return Value
{{func_name}}() { return {{exit_code}}; }

import subprocess

# Specify Function Return Value
# Make sure to replace <placeholders> with actual values
def run_command():
    cmd = [
        "func_name",
        "{",
        "return",
        "<exit_code>;",
        "}"
    ]
    
    try:
        print(f"Executing: {' '.join(cmd)}")
        subprocess.run(cmd, check=True)
    except subprocess.CalledProcessError as e:
        print(f"Error: {e}")
    except FileNotFoundError:
        print("Error: func_name not found. Please install it first.")

if __name__ == "__main__":
    run_command()

When To Use

In applications that require different outcomes based on function logic and return codes.

Pro Tip

Consider using enumeration for return codes to improve code readability and maintenance.

Command Builder

Tune the command before you copy it

Back to syntax

Generated Command

<func_name>() { return <exit_code>; }

Anatomy of Output

Understanding the result

Function 'setReturnCode' executed, returning code 0 Return Notification

Confirms function execution and the return code.

Function completed with status: successful Completion Status

Indicates that the function has executed successfully.

Troubleshooting

Common pitfalls

Error: Return statement without function context.

Solution: Ensure the return statement is inside a defined function.

Error: Invalid exit code specified.

Solution: Confirm that the return code follows the expected range.

Error: Unreachable code detected after return statement.

Solution: Check logic flow to ensure no lines follow a return statement.

Command Breakdown

What each part is doing

<func_name>(): Base Command; The executable that performs this operation. Here it runs Func Name before the shell applies any redirect operators.
<func_name>: func name; The value supplied for func name.
<exit_code>: exit code; The value supplied for exit code.

Alternative Approaches

Comparable commands in other tools

Alternative programming tools for the same job.

Exercism / Download Exercise Hello World exercism download --track <programming_language> --exercise hello-world Nextflow / Run Pipeline With Specific Work Directory And Report nextflow run <workflow> -work-dir <path/to/directory> -with-report <report.html> Nodenv / List Available Node Versions nodenv install --list Perl / Say First Match Group Ignore Space perl -n -E 'say $1 if m/<before> ( <group_regex> ) <after>/x' Python / Alias For Getuserspns Python Script python GetUserSPNs.py