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use std::env; pub fn is_env_on(var: &str) -> bool { env::var(var).ok().map(|val| is_on(&val)).unwrap_or(false) } pub fn is_on(val: &str) -> bool { let lower_val = val.to_lowercase(); vec!["true", "yes", "1"].iter().any(|x| *x == lower_val) }