Verse takes advantage of failure context to let you try out actions without committing them. This is called speculative execution. When an expression succeeds, the effect of the expression is committed, such as changing the value of a variable. If the expression fails, the effects of the expression are rolled back, as though the expression never happened.
speculative execution
Verse takes advantage of failure context to let you try out actions without committing them. This is called speculative execution.
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