Web3 · hard

45. Function selector

How calldata starts.

Write `selectorInput(name, types)` returning the canonical signature string, e.g. `transfer(address,uint256)`, which is what gets keccak-hashed to build a selector.

Required in your answer: .join(

Runs in a sandboxed worker

function selectorInput(name, types) {
  // TODO
}

Output appears here.

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