To add a collaborator to this project you will need to use the Relish gem to add the collaborator via a terminal command. Soon you'll be able to also add collaborators here!
More about adding a collaboratorstrings
Prefer string interpolation and string formatting instead of string concatenation:
# bad email_with_name = user.name + ' <' + user.email + '>' # good email_with_name = "#{user.name} <#{user.email}>" # good email_with_name = format('%s <%s>', user.name, user.email)
Consider padding string interpolation code with space. It more clearly sets the
code apart from the string."#{ user.last_name }, #{ user.first_name }"
Adopt a consistent string literal quoting style. There are two
popular styles in the Ruby community, both of which are considered
good - single quotes by default (Option A) and double quotes by default (Option B).(Option A) Prefer single-quoted strings when you don't need
string interpolation or special symbols such as\t
,\n
,'
,
etc.# bad name = "Bozhidar" # good name = 'Bozhidar'
(Option B) Prefer double-quotes unless your string literal
contains"
or escape characters you want to suppress.# bad name = 'Bozhidar' # good name = "Bozhidar"
The second style is arguably a bit more popular in the Ruby
community. The string literals in this guide, however, are
aligned with the first style.Don't use the character literal syntax
?x
. Since Ruby 1.9 it's
basically redundant -?x
would interpreted as'x'
(a string with
a single character in it).# bad char = ?c # good char = 'c'
Don't leave out
{}
around instance and global variables being
interpolated into a string.class Person attr_reader :first_name, :last_name def initialize(first_name, last_name) @first_name = first_name @last_name = last_name end # bad - valid, but awkward def to_s "#@first_name #@last_name" end # good def to_s "#{@first_name} #{@last_name}" end end $global = 0 # bad puts "$global = #$global" # good puts "$global = #{$global}"
Don't use
Object#to_s
on interpolated objects. It's invoked on them automatically.# bad message = "This is the #{result.to_s}." # good message = "This is the #{result}."
Avoid using
String#+
when you need to construct large data chunks.
Instead, useString#<<
. Concatenation mutates the string instance in-place
and is always faster thanString#+
, which creates a bunch of new string objects.# good and also fast html = '' html << '<h1>Page title</h1>' paragraphs.each do |paragraph| html << "<p>#{paragraph}</p>" end
When using heredocs for multi-line strings keep in mind the fact
that they preserve leading whitespace. It's a good practice to
employ some margin based on which to trim the excessive whitespace.code = <<-END.gsub(/^\s+\|/, '') |def test | some_method | other_method |end END #=> "def test\n some_method\n other_method\nend\n"
Last published almost 7 years ago by David Kariuki.