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Add examples to uniq (#2472)

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Chris Gillespie 2020-08-31 19:52:55 -07:00 committed by GitHub
parent f54cf8a096
commit 6b5d96337e
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1 changed files with 33 additions and 2 deletions
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35
crates/nu-cli/src/commands/uniq.rs
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@ -1,9 +1,10 @@
use crate::commands::WholeStreamCommand;
use crate::context::CommandRegistry;
use crate::prelude::*;
use indexmap::indexmap;
use indexmap::map::IndexMap;
use nu_errors::ShellError;
use nu_protocol::Signature;
use nu_protocol::{Signature, UntaggedValue};
pub struct Uniq;
@ -28,6 +29,36 @@ impl WholeStreamCommand for Uniq {
) -> Result<OutputStream, ShellError> {
uniq(args, registry).await
}
fn examples(&self) -> Vec<Example> {
vec![
Example {
description: "Remove duplicate rows of a list/table",
example: "echo [2 3 3 4] | uniq",
result: Some(vec![
UntaggedValue::int(2).into(),
UntaggedValue::int(3).into(),
UntaggedValue::int(4).into(),
]),
},
Example {
description: "Remove duplicate rows and show counts of a list/table",
example: "echo [1 2 2] | uniq -c",
result: Some(vec![
UntaggedValue::row(indexmap! {
"value".to_string() => UntaggedValue::int(1).into(),
"count".to_string() => UntaggedValue::int(1).into(),
})
.into(),
UntaggedValue::row(indexmap! {
"value".to_string() => UntaggedValue::int(2).into(),
"count".to_string() => UntaggedValue::int(2).into(),
})
.into(),
]),
},
]
}
}
async fn uniq(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
@ -46,7 +77,7 @@ async fn uniq(args: CommandArgs, registry: &CommandRegistry) -> Result<OutputStr
if should_show_count {
for item in uniq_values {
use nu_protocol::{UntaggedValue, Value};
use nu_protocol::Value;
let value = {
match item.0.value {
UntaggedValue::Row(mut row) => {