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The Underhanded Solidity Contest 2024 is open for submissions! 🕵️ . Announcements. 0: 87: July 31, 2024 The Solidity Developer Survey Results 2023 are out! 🎉 ...
Does solidity supports power operations like 2^3 = 8 or should I perform multiple multiplications? Should i include a math library? I don't find anything in the official doc. Thanks
I think, back when I wrote the answer, I was still using Solidity ^0.4.24. In Solidity 0.5.0 and higher, you are required to specify for strings whether they will be stored in memory or storage. If you add the memory keyword after string for every parameter and the return value, everything should work as expected. –
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I'm trying to inherit from a contract. I'm expecting the child contract to have the same constructor as the parent (or be overwritten) pragma solidity ^0.4.2; contract parent{ string public ...
Since Solidity 0.6.0 this is no longer possible Member-access to length of arrays is now always read-only, even for storage arrays. It is no longer possible to resize storage arrays assigning a new value to their length.
What's the best way to calculate with dates in solidity, in particular, getting the total number of days between the start date and end date? Date are stored in the Unix epoch format (timestamp) which consists in an integer of the number of seconds since 1970-01-01.
solidity 是一门专用的智能合约编程语言，换句话说，它除了写智能合约外，目前啥也不能干。 区块链行业目前整体市场很小，国内更是受政策影响，就业岗位很少，而智能合约作为区块链的一个小模块，岗位就更少了。
This opcode returns the size of the code on an address. If the size is larger than zero, the address is a contract. But you need to write assembly code within the contract to access this opcode since the Solidity compiler does not support it directly at the moment. The above code creates a private method that you can call from within your ...
I have this inside my function and i want to get its absolute value . return (int(keccak256(abi.encodePacked(block.timestamp, block.difficulty)))%100000);
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