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#![allow(dead_code)] #![allow(unused_variables)] pub mod arithmetic{ pub mod division { pub fn division_res(x:f64,y:f64)->Option<f64>{ if y==0.0{ None }else{ Some(x/y) } } } }
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#![allow(dead_code)] #![allow(unused_variables)] pub mod arithmetic{ pub mod division { pub fn division_res(x:f64,y:f64)->Option<f64>{ if y==0.0{ None }else{ Some(x/y) } } } }