From 84a6010f71bb2655d96cbb882a7b976f63e60e43 Mon Sep 17 00:00:00 2001 From: Chris Gillespie <6572184+gillespiecd@users.noreply.github.com> Date: Sat, 29 Aug 2020 20:36:43 -0700 Subject: [PATCH] Minor stddev updates (#2452) 1. Add an example for getting the sample stddev 2. Opt for ? instead of generic Err match --- crates/nu-cli/src/commands/math/stddev.rs | 40 ++++++++++++----------- 1 file changed, 21 insertions(+), 19 deletions(-) diff --git a/crates/nu-cli/src/commands/math/stddev.rs b/crates/nu-cli/src/commands/math/stddev.rs index 2e087d0f1..d8866d223 100644 --- a/crates/nu-cli/src/commands/math/stddev.rs +++ b/crates/nu-cli/src/commands/math/stddev.rs @@ -83,30 +83,32 @@ impl WholeStreamCommand for SubCommand { entries: column_totals, }) .into_untagged_value()) - }; + }?; - match res { - Ok(v) => { - if v.value.is_table() { - Ok(OutputStream::from( - v.table_entries() - .map(|v| ReturnSuccess::value(v.clone())) - .collect::>(), - )) - } else { - Ok(OutputStream::one(ReturnSuccess::value(v))) - } - } - Err(e) => Err(e), + if res.value.is_table() { + Ok(OutputStream::from( + res.table_entries() + .map(|v| ReturnSuccess::value(v.clone())) + .collect::>(), + )) + } else { + Ok(OutputStream::one(ReturnSuccess::value(res))) } } fn examples(&self) -> Vec { - vec![Example { - description: "Get the stddev of a list of numbers", - example: "echo [1 2 3 4 5] | math stddev", - result: Some(vec![UntaggedValue::decimal(BigDecimal::from_str("1.414213562373095048801688724209698078569671875376948073176679737990732478462107038850387534327641573").expect("Could not convert to decimal from string")).into()]), - }] + vec![ + Example { + description: "Get the stddev of a list of numbers", + example: "echo [1 2 3 4 5] | math stddev", + result: Some(vec![UntaggedValue::decimal(BigDecimal::from_str("1.414213562373095048801688724209698078569671875376948073176679737990732478462107038850387534327641573").expect("Could not convert to decimal from string")).into()]), + }, + Example { + description: "Get the sample stddev of a list of numbers", + example: "echo [1 2 3 4 5] | math stddev -s", + result: Some(vec![UntaggedValue::decimal(BigDecimal::from_str("1.581138830084189665999446772216359266859777569662608413428752426396297219319619110672124054189650148").expect("Could not convert to decimal from string")).into()]), + }, + ] } }