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value_semantics_enabled

logicaffeine_compile::semantics::collections

Function value_semantics_enabled 

Source 
pub fn value_semantics_enabled() -> bool
Expand description

Whether Mutable Value Semantics (copy-on-write for collections) is enabled. Value semantics is the DEFAULT (all four tiers — tree-walker, VM, AOT, JIT — implement it). LOGOS_VALUE_SEMANTICS=0 restores the historical reference semantics (escape hatch). A thread-local ReferenceScope also forces reference semantics for the duration of compile-time PE / self-interpreter execution (bootstrap-scope). The env var is read once and cached; the thread-local check is a single Cell read, so the hot path stays cheap.