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use std::str::FromStr;
use lz_err::LzErr;
pub trait SGetter<IT> {
fn get_s(&self,s:IT)->Option<String>;
fn get_s_def(&self,s:IT,def:&str)->String{
self.get_s(s).unwrap_or(def.to_string())
}
fn get_t<RT:FromStr>(&self,s:IT)->Result<RT,LzErr>{
match self.get_s(s) {
Some(r)=>{
match r.parse::<RT>(){
Ok(res)=>Ok(res),
Err(_)=>Err(LzErr::NoParse(r.to_string())),
}
}
None=>Err(LzErr::NotFound),
}
}
fn get_t_def<RT:FromStr>(&self,s:IT,def:RT)->RT{
self.get_t(s).unwrap_or(def)
}
}