versatile-data 0.50.2

A library for databases that has convenient datasets that group together commonly used fields and gives you the flexibility to create your own fields.
Documentation 
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#[cfg(test)]

#[test]
fn test() {
    use versatile_data::prelude::*;

    let dir="./vd-test2/";
    if std::path::Path::new(dir).exists(){
        std::fs::remove_dir_all(dir).unwrap();
    }
    if let Ok(mut data)=Data::new(dir){
        //1
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Olivia")
                ,KeyValue::new("country","UK")
            ]
        });
        data.update(&Operation::Update{
            row:1
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:2
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:3
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Olivia")
                ,KeyValue::new("country","UK")
            ]
        });

        //2
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Olivia")
                ,KeyValue::new("country","UK")
            ]
        });
        data.update(&Operation::Update{
            row:1
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:2
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:3
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Olivia")
                ,KeyValue::new("country","UK")
            ]
        });
        data.update(&Operation::Update{
            row:4
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:5
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:6
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Olivia")
                ,KeyValue::new("country","UK")
            ]
        });

        //3
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::New{
            activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Olivia")
                ,KeyValue::new("country","UK")
            ]
        });
        data.update(&Operation::Update{
            row:1
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Renamed Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:2
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Renamed Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:3
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Renamed Olivia")
                ,KeyValue::new("country","UK")
            ]
        });
        data.update(&Operation::Update{
            row:4
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:5
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:6
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Renamed Olivia")
                ,KeyValue::new("country","UK")
            ]
        });
        data.update(&Operation::Update{
            row:7
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Noah")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:8
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Liam")
                ,KeyValue::new("country","US")
            ]
        });
        data.update(&Operation::Update{
            row:9
            ,activity:Activity::Active
            ,term_begin:Term::Defalut
            ,term_end:Term::Defalut
            ,fields:vec![
                KeyValue::new("name","Renamed Olivia")
                ,KeyValue::new("country","UK")
            ]
        });
    }
}