Solved

# 2 level sort on array of hashes

Posted on 2003-03-03
Medium Priority
415 Views
I have an array of hashes, each hash contains several numeric values, some of which are null strings. Note that this means no value recorded, not 0.

name             1 yr 3 yr 5 yr
-------------------------------
ACAST - MIX 0    4.60 5.53
ACAST - MIX 30   1.30 6.06
ACAST - MIX 30   1.30 5.63 6.96
ACAST - MIX 50  -1.60 5.45 7.57
ACAST - MIX 70  -3.60 5.65 8.19

I want results returned sorted firstly by one key, but also with a secondary sort on a second key. For example sorted by 1 yr and then 3 yr (within the 1 yr results), or

ACAST - MIX 30   1.30 5.63 6.96
ACAST - MIX 30   1.30 6.06

ozo came up with this great one liner for a primary sort. How to adapt it to a 2 level sort?

@sorted_amounts = sort{ (\$a->{\$key}||0) <=> (\$b->{\$key}||0) } @unsorted_amounts;

0
Question by:Kim Ryan

LVL 85

Accepted Solution

ozo earned 1200 total points
ID: 8060869
@sorted_amounts = sort{ (\$a->{yr1}||0) <=> (\$b->{yr1}||0) || (\$a->{yr3}||0) <=> (\$b->{yr3}||0) } @unsorted_amounts;
0

LVL 19

Author Comment

ID: 8069927
thanks ozo, works perfectly
0

## Featured Post

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Many time we need to work with multiple files all together. If its windows system then we can use some GUI based editor to accomplish our task. But what if you are on putty or have only CLI(Command Line Interface) as an option to  edit your files. I…
A year or so back I was asked to have a play with MongoDB; within half an hour I had downloaded (http://www.mongodb.org/downloads),  installed and started the daemon, and had a console window open. After an hour or two of playing at the command …
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
Six Sigma Control Plans
###### Suggested Courses
Course of the Month8 days, 15 hours left to enroll