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Last three math commands, eval, variance and stddev (#292)

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* MathEval Variance and Stddev

* Fix tests and linting

* Typo
This commit is contained in:
Luccas Mateus
2021-11-05 14:58:40 -03:00
committed by GitHub
parent 345b51b272
commit c7d159a0f3
8 changed files with 368 additions and 5 deletions
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12
crates/nu-command/src/math/utils.rs
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@ -2,12 +2,10 @@ use nu_protocol::ast::Call;
use nu_protocol::{IntoPipelineData, PipelineData, ShellError, Span, Value};
use std::collections::HashMap;
pub type MathFunction = fn(values: &[Value], span: &Span) -> Result<Value, ShellError>;
pub fn run_with_function(
call: &Call,
input: PipelineData,
mf: MathFunction,
mf: impl Fn(&[Value], &Span) -> Result<Value, ShellError>,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let name = call.head;
let res = calculate(input, name, mf);
@ -20,7 +18,7 @@ pub fn run_with_function(
fn helper_for_tables(
values: PipelineData,
name: Span,
mf: MathFunction,
mf: impl Fn(&[Value], &Span) -> Result<Value, ShellError>,
) -> Result<Value, ShellError> {
// If we are not dealing with Primitives, then perhaps we are dealing with a table
// Create a key for each column name
@ -63,7 +61,11 @@ fn helper_for_tables(
})
}
pub fn calculate(values: PipelineData, name: Span, mf: MathFunction) -> Result<Value, ShellError> {
pub fn calculate(
values: PipelineData,
name: Span,
mf: impl Fn(&[Value], &Span) -> Result<Value, ShellError>,
) -> Result<Value, ShellError> {
match values {
PipelineData::Stream(_) => helper_for_tables(values, name, mf),
PipelineData::Value(Value::List { ref vals, .. }) => match &vals[..] {