pub fn conf_changes_from_string(s: &str) -> Result<Vec<ConfChangeSingle>, String> {
    let mut ccs = Vec::<ConfChangeSingle>::new();
    for tok in &mut s
        .split_ascii_whitespace()
        .map(|s| s.chars())
        .collect::<Vec<_>>()
    {
        if tok.count() < 2 {
            return Err(format!(
                "unknown token {}",
                tok.into_iter().collect::<String>()
            ));
        }
        let mut cc = ConfChangeSingle::new();
        match tok.nth(0).unwrap() {
            'v' => cc.set_field_type(ConfChangeAddNode),
            'l' => cc.set_field_type(ConfChangeAddLearnerNode),
            'r' => cc.set_field_type(ConfChangeRemoveNode),
            'u' => cc.set_field_type(ConfChangeUpdateNode),
            _ => {
                return Err(format!(
                    "unknown token {}",
                    tok.into_iter().collect::<String>()
                ));
            }
        }
        let id = tok.skip(0).into_iter().collect::<String>();
        cc.set_node_id(id.parse().unwrap());
        ccs.push(cc);
    }
    Ok(ccs)
}
// ConfChangesFromString parses a Space-delimited sequence of operations into a
// slice of ConfChangeSingle. The supported operations are:
// - vn: make n a voter,
// - ln: make n a learner,
// - rn: remove n, and
// - un: update n.
ConfChangesFromString parses a Space-delimited sequence of operations into a
slice of ConfChangeSingle.
ConfChangesFromString parses a Space - delimited sequence of operations into a slice of ConfChangeSingle .
pub fn conf_changes_from_string(s: &str) -> Result<Vec<ConfChangeSingle>, String> {
    let mut ccs = Vec::<ConfChangeSingle>::new();
    for tok in &mut s
        .split_ascii_whitespace()
        .map(|s| s.chars())
        .collect::<Vec<_>>()
    {
        if tok.count() < 2 {
            return Err(format!(
                "unknown token {}",
                tok.into_iter().collect::<String>()
            ));
        }
        let mut cc = ConfChangeSingle::new();
        match tok.nth(0).unwrap() {
            'v' => cc.set_field_type(ConfChangeAddNode),
            'l' => cc.set_field_type(ConfChangeAddLearnerNode),
            'r' => cc.set_field_type(ConfChangeRemoveNode),
            'u' => cc.set_field_type(ConfChangeUpdateNode),
            _ => {
                return Err(format!(
                    "unknown token {}",
                    tok.into_iter().collect::<String>()
                ));
            }
        }
        let id = tok.skip(0).into_iter().collect::<String>();
        cc.set_node_id(id.parse().unwrap());
        ccs.push(cc);
    }
    Ok(ccs)
}
pub fn conf_changes_from_string ( s : & str ) -> Result < Vec < ConfChangeSingle > , String > { let mut ccs = Vec :: < ConfChangeSingle > :: new ( ) ; for tok in & mut s . split_ascii_whitespace ( ) . map ( | s | s . chars ( ) ) . collect :: < Vec < _ > > ( ) { if tok . count ( ) < 2 { return Err ( format ! ( " " tok into_iter ( ) collect String ( ) ) ) ; } let mut cc = ConfChangeSingle :: new ( ) ; match tok . nth ( 0 ) . unwrap ( ) { 'v' => cc . set_field_type ( ConfChangeAddNode ) , 'l' => cc . set_field_type ( ConfChangeAddLearnerNode ) , 'r' => cc . set_field_type ( ConfChangeRemoveNode ) , 'u' => cc . set_field_type ( ConfChangeUpdateNode ) , _ => { return Err ( format ! ( " " tok into_iter ( ) collect String ( ) ) ) ; } } let id = tok . skip ( 0 ) . into_iter ( ) . collect :: < String > ( ) ; cc . set_node_id ( id . parse ( ) . unwrap ( ) ) ; ccs . push ( cc ) ; } Ok ( ccs ) }
ConfChangesFromString parses a Space-delimited sequence of operations into a
slice of ConfChangeSingle.
ConfChangesFromString parses a Space - delimited sequence of operations into a slice of ConfChangeSingle .
s
&str