people = [
{id: 101, first_name: 'John', last_name: 'Doe'},
{id: 102, first_name: 'Tom', last_name: 'Rogers'},
{id: 103, first_name: 'Bill', last_name: ''}
]
I want to put a list of name like this
"John Doe, Tom Rogers, Bill"
How can i achieve this is in ruby?
Input
people = [
{ id: 101, first_name: 'John', last_name: 'Doe' },
{ id: 102, first_name: 'Tom', last_name: 'Rogers' },
{ id: 103, first_name: 'Bill', last_name: '' }
]
Code
p people.map { |x| x[:first_name].to_s + ' ' + x[:last_name].to_s }
.map(&:strip)
.join(",")
Output
"John Doe,Tom Rogers,Bill"
The other answers are good, but I wanted to add a demonstration of string interpolation.
people
.map { |p| "#{p[:first_name]} #{p[:last_name]}" }
.join(", ")
@rajagopalan has a good idea in using strip to remove unwanted whitespace at the beginning and end of the first and last name combination, but it might be even better to run this on each component of the name.
people
.map { |p| "#{p[:first_name].strip} #{p[:last_name].strip}" }
.join(", ")
"Bill " (Note the whitespace at the end).
"#{p[:first_name]} #{p[:last_name]}".sub(/\s+/, ' ').strip to remove leading or trailing whitespace, and any extraneous whitespace inside each name..sub(/\s+/, ' ') is going to replace one or more whitespace characters with a single space.I would do
people
.map { |p| p.values_at(:first_name, :last_name).join(' ').strip }
.join(', ')
#=> "John Doe, Tom Rogers, Bill"
or
people
.map { |p| "#{p[:first_name]} #{p[:last_name]}".strip }
.join(', ')
#=> "John Doe, Tom Rogers, Bill"