From 965e07d8cca1feccc5246deec78f0770f9144c64 Mon Sep 17 00:00:00 2001
From: Chris Gillespie <6572184+gillespiecd@users.noreply.github.com>
Date: Sun, 30 Aug 2020 13:50:36 -0700
Subject: [PATCH] Minor updates to variance (#2458)

---
 crates/nu-cli/src/commands/math/variance.rs | 40 +++++++++++----------
 1 file changed, 21 insertions(+), 19 deletions(-)

diff --git a/crates/nu-cli/src/commands/math/variance.rs b/crates/nu-cli/src/commands/math/variance.rs
index b081b8050c..893632b836 100644
--- a/crates/nu-cli/src/commands/math/variance.rs
+++ b/crates/nu-cli/src/commands/math/variance.rs
@@ -81,30 +81,32 @@ 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::<Vec<_>>(),
-                    ))
-                } 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::<Vec<_>>(),
+            ))
+        } else {
+            Ok(OutputStream::one(ReturnSuccess::value(res)))
         }
     }
 
     fn examples(&self) -> Vec<Example> {
-        vec![Example {
-            description: "Get the variance of a list of numbers",
-            example: "echo [1 2 3 4 5] | math variance",
-            result: Some(vec![UntaggedValue::decimal(2).into()]),
-        }]
+        vec![
+            Example {
+                description: "Get the variance of a list of numbers",
+                example: "echo [1 2 3 4 5] | math variance",
+                result: Some(vec![UntaggedValue::decimal(2).into()]),
+            },
+            Example {
+                description: "Get the sample variance of a list of numbers",
+                example: "echo [1 2 3 4 5] | math variance -s",
+                result: Some(vec![UntaggedValue::decimal(2.5).into()]),
+            },
+        ]
     }
 }