brassfibre 0.2.0

Provides multiple-dtype columner storage, known as DataFrame in pandas/R
Documentation 
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#[macro_use]
extern crate brassfibre;
use brassfibre::prelude::*;

#[test]
fn test_creation() {
    let iarr = array![1i64, 2, 3];
    assert_eq!(iarr.dtype(), "i64");
    assert_eq!(iarr.len(), 3);

    let farr = array![1.1f64, 2.1, 3.1, 4.1];
    assert_eq!(farr.dtype(), "f64");
    assert_eq!(farr.len(), 4);

    let barr = array![true, false, true];
    assert_eq!(barr.dtype(), "bool");
    assert_eq!(barr.len(), 3);

    let sarr = array!["a".to_string(), "b".to_string()];
    assert_eq!(sarr.dtype(), "str");
    assert_eq!(sarr.len(), 2);
}

#[test]
fn test_creation_macros() {
    let iarr = array![1i32, 2, 3];
    assert_eq!(iarr.dtype(), "i32");
    assert_eq!(iarr.len(), 3);

    let i64arr = array![1i64, 2, 3];
    assert_eq!(i64arr.dtype(), "i64");
    assert_eq!(i64arr.len(), 3);

    let farr = array![1.1f64, 2.1, 3.1, 4.1];
    assert_eq!(farr.dtype(), "f64");
    assert_eq!(farr.len(), 4);

    let barr = array![true, false, true];
    assert_eq!(barr.dtype(), "bool");
    assert_eq!(barr.len(), 3);

    let str_arr = array!["A".to_string(), "B".to_string(), "C".to_string()];
    assert_eq!(str_arr.dtype(), "str");
    assert_eq!(str_arr.len(), 3);

    let string_arr = array!["A".to_string(), "B".to_string(), "C".to_string()];
    assert_eq!(string_arr.dtype(), "str");
    assert_eq!(string_arr.len(), 3);
}

#[test]
fn test_dtype_property() {
    let iarr = array![1i64, 2, 3];
    assert_eq!(iarr.dtype(), "i64");
    assert_eq!(iarr.is_numeric(), true);

    let farr = array![1.1f64, 2.1, 3.1, 4.1];
    assert_eq!(farr.dtype(), "f64");
    assert_eq!(farr.is_numeric(), true);

    let barr = array![true, false, true];
    assert_eq!(barr.dtype(), "bool");
    assert_eq!(barr.is_numeric(), false);

    let sarr = array!["a".to_string(), "b".to_string()];
    assert_eq!(sarr.dtype(), "str");
    assert_eq!(sarr.is_numeric(), false);
}

#[test]
fn test_eq() {
    let iarr1 = array![1i64, 2, 3];
    let iarr2 = array![2i64, 3, 4];
    let iarr3 = array![1i64, 2, 3, 4, 5];
    let iarr4 = array![1i64, 2, 3];
    assert_eq!(iarr1, iarr1);
    assert_eq!(iarr1 == iarr2, false);
    assert_eq!(iarr1 == iarr3, false);
    assert_eq!(iarr1, iarr4);

    let farr1 = array![1.0f64, 2., 3.];
    let farr2 = array![2.0f64, 3., 4.];
    let farr3 = array![1.0f64, 2., 3., 4., 5.];
    let farr4 = array![1.0f64, 2., 3.];
    assert_eq!(farr1, farr1);
    assert_eq!(farr1 == farr2, false);
    assert_eq!(farr1 == farr3, false);
    assert_eq!(farr1, farr4);

    // different types
    assert_eq!(iarr1 == farr1, false);
    assert_eq!(iarr2 == farr2, false);
    assert_eq!(iarr3 == farr3, false);
    assert_eq!(iarr4 == farr4, false);
}

#[test]
fn test_clone() {
    let iarr1 = array![1i64, 2, 3];
    assert_eq!(iarr1, iarr1.clone());
}


#[test]
fn test_astype() {
    // let iarr = array![1i64, 2, 3];
    // assert_eq!(iarr.astype::<f64>(), array![1.0f64, 2., 3.]);
    // assert_eq!(iarr.astype::<i64>(), array![1i64, 2, 3]);

    // let farr = array![1.1f64, 2.1, 3.1];
    // assert_eq!(farr.astype::<f64>(), array![1.1f64, 2.1, 3.1]);
    // assert_eq!(farr.astype::<i64>(), array![1i64, 2, 3]);
}


#[test]
fn test_ilocs() {
    let iarr = array![1i64, 2, 3, 4, 5];
    assert_eq!(iarr.dtype(), "i64");
    assert_eq!(iarr.iloc(&2), Scalar::i64(3));
    let ires = iarr.ilocs(&vec![1, 4, 0]);
    assert_eq!(ires, array![2i64, 5, 1]);

    let farr = array![1.1f64, 2.1, 3.1, 4.1, 5.1];
    assert_eq!(farr.dtype(), "f64");
    assert_eq!(farr.iloc(&2), Scalar::f64(3.1));
    let fres = farr.ilocs(&vec![1, 4, 0]);
    assert_eq!(fres, array![2.1f64, 5.1, 1.1]);

    let barr = array![true, false, true, true];
    assert_eq!(barr.iloc(&2), Scalar::bool(true));
    let bres = barr.ilocs(&vec![1, 2]);
    assert_eq!(bres, array![false, true]);

    let sarr = array!["a".to_string(), "b".to_string(), "c".to_string()];
    assert_eq!(sarr.iloc(&2), Scalar::String("c".to_string()));
    let sres = sarr.ilocs(&vec![2, 0]);
    assert_eq!(sres, array!["c".to_string(), "a".to_string()]);
}

#[test]
#[should_panic]
fn test_ilocs_panic() {
    let iarr = array![1i64, 2, 3, 4, 5];
    iarr.ilocs(&vec![1, 5, 0]);
}

#[test]
fn test_blocs() {
    let iarr = array![1i64, 2, 3];
    assert_eq!(iarr.dtype(), "i64");
    let ires = iarr.blocs(&vec![true, false, true]);
    assert_eq!(ires, array![1i64, 3]);

    let farr = array![1.1f64, 2.1, 3.1];
    assert_eq!(farr.dtype(), "f64");
    let fres = farr.blocs(&vec![true, false, true]);
    assert_eq!(fres, array![1.1f64, 3.1]);

    let barr = array![true, false, true];
    let bres = barr.blocs(&vec![true, false, true]);
    assert_eq!(bres, array![true, true]);

    let sarr = array!["a".to_string(), "b".to_string(), "c".to_string()];
    let sres = sarr.blocs(&vec![true, false, true]);
    assert_eq!(sres, array!["a".to_string(), "c".to_string()]);
}

#[test]
fn test_container() {
    let iarr: Array = vec![1i32, 2, 3].into();
    let farr: Array = vec![1.1f64, 2.1, 3.1].into();
    let barr: Array = vec![true, false, true].into();
    let sarr: Array = vec!["a".to_string(), "b".to_string(), "c".to_string()].into();
    assert_eq!(iarr.dtype(), "i32");
    assert_eq!(farr.dtype(), "f64");
    assert_eq!(barr.dtype(), "bool");
    assert_eq!(sarr.dtype(), "str");

    let container: Vec<Array> = vec![iarr, farr, barr, sarr];
    assert_eq!(container.len(), 4);
    let dtypes: Vec<String> = container.iter().map(|ref x| x.dtype()).collect();
    assert_eq!(dtypes, vec!["i32", "f64", "bool", "str"]);

    let i64arr: Array = vec![1i64, 2, 3].into();
    assert_eq!(i64arr.dtype(), "i64");
}

#[test]
fn test_append() {
    let iarr1 = array![1i64, 2, 3];
    assert_eq!(iarr1.dtype(), "i64");

    let iarr2 = array![1i64, 2, 3];
    assert_eq!(iarr2.dtype(), "i64");

    let res = iarr1.append(&iarr2);
    assert_eq!(res.dtype(), "i64");

    let exp = array![1i64, 2, 3, 1, 2, 3];
    assert_eq!(res, exp);
}