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Add examples to update cmd (#2628)

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Chris Gillespie 2020-10-01 18:13:42 -07:00 committed by GitHub
parent ddf9d61346
commit 2f1016d44f
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3 changed files with 36 additions and 5 deletions
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19
crates/nu-cli/src/commands/rename.rs
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@ -1,6 +1,6 @@
use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use indexmap::IndexMap;
use indexmap::indexmap;
use nu_errors::ShellError;
use nu_protocol::{ReturnSuccess, Signature, SyntaxShape, UntaggedValue, Value};
use nu_source::Tagged;
@ -45,13 +45,22 @@ impl WholeStreamCommand for Rename {
vec![
Example {
description: "Rename a column",
example: r#"echo "{a: 1, b: 2, c: 3}" | from json | rename my_column"#,
result: None,
example: "echo [[a, b]; [1, 2]] | rename my_column",
result: Some(vec![UntaggedValue::row(indexmap! {
"my_column".to_string() => UntaggedValue::int(1).into(),
"b".to_string() => UntaggedValue::int(2).into(),
})
.into()]),
},
Example {
description: "Rename many columns",
example: r#"echo "{a: 1, b: 2, c: 3}" | from json | rename spam eggs cars"#,
result: None,
example: "echo [[a, b, c]; [1, 2, 3]] | rename eggs ham bacon",
result: Some(vec![UntaggedValue::row(indexmap! {
"eggs".to_string() => UntaggedValue::int(1).into(),
"ham".to_string() => UntaggedValue::int(2).into(),
"bacon".to_string() => UntaggedValue::int(3).into(),
})
.into()]),
},
]
}

13
crates/nu-cli/src/commands/update.rs
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@ -2,6 +2,7 @@ use crate::command_registry::CommandRegistry;
use crate::commands::classified::block::run_block;
use crate::commands::WholeStreamCommand;
use crate::prelude::*;
use indexmap::indexmap;
use nu_errors::ShellError;
use nu_protocol::{
ColumnPath, Primitive, ReturnSuccess, Scope, Signature, SyntaxShape, UntaggedValue, Value,
@ -49,6 +50,18 @@ impl WholeStreamCommand for Update {
) -> Result<OutputStream, ShellError> {
update(args, registry).await
}
fn examples(&self) -> Vec<Example> {
vec![Example {
description: "Update a column value",
example: "echo [[a, b]; [1, 2]] | update a 'nu'",
result: Some(vec![UntaggedValue::row(indexmap! {
"a".to_string() => Value::from("nu"),
"b".to_string() => UntaggedValue::int(2).into(),
})
.into()]),
}]
}
}
async fn process_row(

9
docs/commands/update.md
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@ -49,3 +49,12 @@ Updates an existing column on a table. First parameter is the column to update a
1 │ X │ filesystem │ /
━━━┷━━━┷━━━━━━━━━━━━┷━━━━━━
```
Collect all the values of a nested column and join them together
```shell
> version | update features {get features | str collect ', '}
───┬─────────┬──────────────────────────────────────────┬───────────────────────────
# │ version │ commit_hash │ features
───┼─────────┼──────────────────────────────────────────┼───────────────────────────
0 │ 0.20.0 │ fdab3368094e938c390f1e5a7892a42da45add3e │ default, clipboard, trash
───┴─────────┴──────────────────────────────────────────┴───────────────────────────