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Clarity maps give you typed, persistent key‑value storage on Stacks. This post walks through a real‑world example, shows the costs, and explains when to batch writes or avoid deep nesting.
Clarity bans loops to keep execution costs predictable — which means recursion without a depth guard is a mainnet incident. Here's how to bound your contract logic and verify it before deployment.
Post-conditions are caller-side assertions that bound asset movement in a Stacks transaction. Here is what they enforce, what they miss, and how to check them.
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