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I'm implementing a DoubleAuction and I want to call the breakEven function, that finds the market clearing price, always as very last function in the current Block. Is there any way that I can check in solidity if the current transaction is the last transaction in the current block and if so, I'd call the breakEven function?

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No, there's no good way to get this sort of information about the current block in Solidity.

An idea that may be more practical is to call the function in the next block, and have it find the price for the previous block

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  • any ideas on how I could make sure that this call would be the very first function call in the next block then? – Matthias Seidl Jun 20 '18 at 11:44
  • You can keep track of the last time the function was called, and require that it has not been called yet on this block – Tjaden Hess Jun 20 '18 at 15:44

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