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Ruby Multi Line Blocks Usage
The Next CEO of Stack OverflowReturn render in Ruby on Railsruby code case when not so dryRuby blocks formatStylistic exception and bang usageRuby ActiveRecord importing libraryMath Calculus in rubyImplementation on AMQP in RubyRuby object declared as constantRuby Select uniq in one statementRuby on Rails quiz function
$begingroup$
According to the Ruby Style Guide and Airbnb Style Guide:
Prefer ... over do...end for single-line blocks. Avoid using ... for multi-line blocks (multiline chaining is always ugly).
Now, image the following functions which must return an array of hashes:
OPTION 1
def generate_fields_1
words = ["foo", "bar", "bla"]
numbers = [1, 2, 3]
fields = []
words.each do |word|
numbers.each do |number|
content = find_content(word, number)
next if content.nil?
fields <<
kind: word,
value: content
end
end
fields
end
OPTION 2
def generate_fields_2
words = ["foo", "bar", "bla"]
numbers = [1, 2, 3]
words.map do |word|
numbers.map do |number|
content = find_content(word, number)
next if content.nil?
kind: word,
value: content
end.compact
end.flatten
end
The result is an array of hashes of any length because it depends on the find_content
function which might return a nil value.
[
kind: "", value: "BRL" ,
kind: "", value: "AUS" ,
kind: "", value: "PER" ,
]
Both functions return the same result but I see a tricky situation. The second option is better for me because I don't have the field
variable and is cleaner than option 1. However, option 1 is straightforward without any shady behaviour such as end.compact
or end.flatten
.
What is the most appropriate function between both options? Is there any other alternative which respects the guidelines and returns the same result? Thanks in advance.
ruby ruby-on-rails
New contributor
$endgroup$
add a comment |
$begingroup$
According to the Ruby Style Guide and Airbnb Style Guide:
Prefer ... over do...end for single-line blocks. Avoid using ... for multi-line blocks (multiline chaining is always ugly).
Now, image the following functions which must return an array of hashes:
OPTION 1
def generate_fields_1
words = ["foo", "bar", "bla"]
numbers = [1, 2, 3]
fields = []
words.each do |word|
numbers.each do |number|
content = find_content(word, number)
next if content.nil?
fields <<
kind: word,
value: content
end
end
fields
end
OPTION 2
def generate_fields_2
words = ["foo", "bar", "bla"]
numbers = [1, 2, 3]
words.map do |word|
numbers.map do |number|
content = find_content(word, number)
next if content.nil?
kind: word,
value: content
end.compact
end.flatten
end
The result is an array of hashes of any length because it depends on the find_content
function which might return a nil value.
[
kind: "", value: "BRL" ,
kind: "", value: "AUS" ,
kind: "", value: "PER" ,
]
Both functions return the same result but I see a tricky situation. The second option is better for me because I don't have the field
variable and is cleaner than option 1. However, option 1 is straightforward without any shady behaviour such as end.compact
or end.flatten
.
What is the most appropriate function between both options? Is there any other alternative which respects the guidelines and returns the same result? Thanks in advance.
ruby ruby-on-rails
New contributor
$endgroup$
add a comment |
$begingroup$
According to the Ruby Style Guide and Airbnb Style Guide:
Prefer ... over do...end for single-line blocks. Avoid using ... for multi-line blocks (multiline chaining is always ugly).
Now, image the following functions which must return an array of hashes:
OPTION 1
def generate_fields_1
words = ["foo", "bar", "bla"]
numbers = [1, 2, 3]
fields = []
words.each do |word|
numbers.each do |number|
content = find_content(word, number)
next if content.nil?
fields <<
kind: word,
value: content
end
end
fields
end
OPTION 2
def generate_fields_2
words = ["foo", "bar", "bla"]
numbers = [1, 2, 3]
words.map do |word|
numbers.map do |number|
content = find_content(word, number)
next if content.nil?
kind: word,
value: content
end.compact
end.flatten
end
The result is an array of hashes of any length because it depends on the find_content
function which might return a nil value.
[
kind: "", value: "BRL" ,
kind: "", value: "AUS" ,
kind: "", value: "PER" ,
]
Both functions return the same result but I see a tricky situation. The second option is better for me because I don't have the field
variable and is cleaner than option 1. However, option 1 is straightforward without any shady behaviour such as end.compact
or end.flatten
.
What is the most appropriate function between both options? Is there any other alternative which respects the guidelines and returns the same result? Thanks in advance.
ruby ruby-on-rails
New contributor
$endgroup$
According to the Ruby Style Guide and Airbnb Style Guide:
Prefer ... over do...end for single-line blocks. Avoid using ... for multi-line blocks (multiline chaining is always ugly).
Now, image the following functions which must return an array of hashes:
OPTION 1
def generate_fields_1
words = ["foo", "bar", "bla"]
numbers = [1, 2, 3]
fields = []
words.each do |word|
numbers.each do |number|
content = find_content(word, number)
next if content.nil?
fields <<
kind: word,
value: content
end
end
fields
end
OPTION 2
def generate_fields_2
words = ["foo", "bar", "bla"]
numbers = [1, 2, 3]
words.map do |word|
numbers.map do |number|
content = find_content(word, number)
next if content.nil?
kind: word,
value: content
end.compact
end.flatten
end
The result is an array of hashes of any length because it depends on the find_content
function which might return a nil value.
[
kind: "", value: "BRL" ,
kind: "", value: "AUS" ,
kind: "", value: "PER" ,
]
Both functions return the same result but I see a tricky situation. The second option is better for me because I don't have the field
variable and is cleaner than option 1. However, option 1 is straightforward without any shady behaviour such as end.compact
or end.flatten
.
What is the most appropriate function between both options? Is there any other alternative which respects the guidelines and returns the same result? Thanks in advance.
ruby ruby-on-rails
ruby ruby-on-rails
New contributor
New contributor
New contributor
asked 4 mins ago
tmmgarciatmmgarcia
1
1
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