result

Use result to return either a success value or an error value from APIs that should not throw immediately.

import "std:result"

Example

import "std:result"

auto ok = result.ok(42)
log ok.unwrapOr(0)

API reference

result

Method	Returns
result.ok(v: any)	*Result
result.err(e: any)	*Result

Result values

Methods available on Result values returned by this package or constructed by the language. An unparameterized result preserves success and error values as any. A result<T> keeps the success type and defaults its error accessor to string; use result<T, E> to specify both sides.

Method	Returns	Notes
value.isOk()	boolean
value.isErr()	boolean
value.unwrap()	any	Returns the success value, or fails for an error result.
value.unwrapOr(def: any)	any	Returns the contained value or a fallback.
value.expect(msg: any)	any	Returns the contained value or fails with a custom message.
value.unwrapErr()	any	Returns the error value, or fails for a success result.
value.expectErr(msg: any)	any	Uses the same error-side accessor with a custom failure message.
value.fromGo(val: any, err: error)	*Result	Creates from go.

Notes

• Prefer import "std:result"; the older import "osl/result" spelling remains supported.