Pure Functions / Stateful Operations
Kind: tension
Record: tension:pure-functions-stateful-operations
Canonical: Schema
"pure-functions" (computation-core layer) is traded against "Stateful Operations" (computation-core layer) — a principle cannot be scope-separated from a quality, metric, or cost it competes with; resolve by measuring "Stateful Operations" and choosing an explicit operating point.
Listed in Tensions, after Referential Transparency / Stateful IO and before Immutability / Allocation Cost.