nushell/crates/nu-command/src/filters/zip_.rs
Luccas Mateus 7a892ec5d7
To html and to md (#453)
* MathEval Variance and Stddev

* Fix tests and linting

* Typo

* Deal with streams when they are not tables

* First draft of these commands

* To MD

* To md and to html

* Fixed cargo and to_md

* `into_abbreviated_string` instead of `into_string`

* Changed how inner tables are displayed
2021-12-09 19:16:35 -06:00

68 lines
1.6 KiB
Rust

use nu_engine::CallExt;
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{
Category, Example, IntoInterruptiblePipelineData, IntoPipelineData, PipelineData, Signature,
SyntaxShape, Value,
};
#[derive(Clone)]
pub struct Zip;
impl Command for Zip {
fn name(&self) -> &str {
"zip"
}
fn usage(&self) -> &str {
"Combine a stream with the input"
}
fn signature(&self) -> nu_protocol::Signature {
Signature::build("zip")
.required("other", SyntaxShape::Any, "the other input")
.category(Category::Filters)
}
fn examples(&self) -> Vec<Example> {
vec![Example {
example: "1..3 | zip 4..6",
description: "Zip multiple streams and get one of the results",
result: None,
}]
}
fn run(
&self,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
let other: Value = call.req(engine_state, stack, 0)?;
let head = call.head;
let ctrlc = engine_state.ctrlc.clone();
Ok(input
.into_iter()
.zip(other.into_pipeline_data().into_iter())
.map(move |(x, y)| Value::List {
vals: vec![x, y],
span: head,
})
.into_pipeline_data(ctrlc))
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_examples() {
use crate::test_examples;
test_examples(Zip {})
}
}