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For example, if a have a variable of type <T as frame_system::Config>::BlockNumber how could I convert it into a u64, simply putting u64::from doesn't work.

1 Answer 1

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use sp_runtime::traits::SaturatedConversion;


fn f(block_number: BlockNumber) {
    block_number.saturated_into::<u64>();
}
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  • Depending on what is the intended behaviour when the block number doesn't fit into 64 bits, using CheckedConversion might be an option as well. Commented Sep 27, 2022 at 9:07

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