Add help information to --help option.
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@ -23,11 +23,13 @@ use std::io::{BufRead, BufReader};
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use std::collections::VecDeque;
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#[derive(StructOpt)]
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#[structopt(about = "A prime number generator and tester.")]
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struct Opt {
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#[structopt(short, long)]
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#[structopt(short, long, help = "Print all found primes")]
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verbose:bool,
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#[structopt(short, long, name="FILE")]
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#[structopt(short, long, name="FILE", help = "Import prime numbers from FILE")]
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import:Option<PathBuf>,
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#[structopt(help = "Ordinal of the prime to generate")]
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n:usize,
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}
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