Documentation

Unsafely transform a Weaken a to an a, without asserting invariants.

Naturally, you must only even consider using this if you have a guarantee that your value is safe to treat as strong.

For example, you may unsafely strengthen some Natural n into a Word8 by unsafely coercing the value, ignoring the possibility that n >= 255.

What happens if it turns out you're lying to the computer and your weak value doesn't fit in its strong counterpart? That depends on the strengthen.

• Numeric coercions should safely overflow.
• Some will raise an error (e.g. NonEmpty).
• Others will appear to work, but later explode your computer.

See Strongweak for class design notes and laws.