feat: add cast --from-wei #261
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gakonst
approved these changes
Dec 19, 2021
| /// Ok(()) | ||
| /// } | ||
| /// ``` | ||
| pub fn from_wei(value: U256, unit: String) -> Result<String> { |
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Have you considered using the ethers_core::utils::parse_units and format_units methods? https://github.com/gakonst/ethers-rs/blob/master/ethers-core/src/utils/mod.rs#L103-L147
| /// assert_eq!(Cast::from_wei(12340000005u64.into(), "gwei".to_string())?, "12.340000005"); | ||
| /// assert_eq!(Cast::from_wei(10.into(), "ether".to_string())?, "0.00000000000000001"); | ||
| /// assert_eq!(Cast::from_wei(100.into(), "eth".to_string())?, "0.0000000000000001"); | ||
| /// assert_eq!(Cast::from_wei(17.into(), "".to_string())?, "17"); |
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Yeah I agree with defaulting to this
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One thing I was not sure about here was how to handle the default behavior when a unit string is not supplied. In dapptools, it defaults to ether, however this is not consistent with the behavior of both dapptools and foundry for --to-wei, which defaults to wei when no unit string is supplied. I chose to make it default to wei, but can change it to ether if that is preferred.