System Effect
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System Effect
Section titled “System Effect”The System effect provides the following built-in operations, wired into the VM and runtime.
| Operation | Signature | Description |
|---|---|---|
System.arg |
arg(n: Int) -> String |
Return the n-th command-line argument (0-based), or nil if out of range. Includes the program name at index 0. |
Implementation site: Standalone VM