option_combinator.rs
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option_combinator.rs
async_task.rs
arc_mutex.rs
trait_impl.rs
macro_pattern.rs
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option_combinator.rs
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fn get_config(key: &str) -> Option<String> {↵
env::var(key).ok()↵
.or_else(|| read_file(key).ok())↵
.filter(|s| !s.is_empty())↵
.map(|s| s.trim().to_owned())↵
}
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