Code snippets related to building strings in Ruby

collect.rb

parameters.collect do |key, value|
  "#{key}=#{value}"
end
# => ["ns0=1", "title=Special:Search", "redirs=1", "advanced=1", "fulltext=Advanced+search", "search=Ruby"]

collect_and_join.rb

parameters.collect do |key, value|
  "#{key}=#{value}"
end.join "&"
# => "ns0=1&title=Special:Search&redirs=1&advanced=1&fulltext=Advanced+search&search=Ruby"

ingredients.rb

host     = "en.wikipedia.org"
base_uri = "/w/index.php"
parameters   = {
  "title"    => "Special:Search",
  "redirs"   => "1",
  "search"   => "Ruby",
  "ns0"      => "1",
  "advanced" => "1",
  "fulltext" => "Advanced+search",
}

new_querystring.rb

def querystring(p)
  p.collect do |key, value|
    "#{key}=#{value}"
  end.join "&"
end

querystring(parameters)
# => "ns0=1&title=Special:Search&redirs=1&advanced=1&fulltext=Advanced+search&search=Ruby"

original_querystring.rb

def querystring(p)
  query_string = ""
  
  p.each do |key, value|
    query_string << "#{key}=#{value}&"
  end
  
  query_string
end

original_querystring_output.rb

querystring(parameters)
# => "ns0=1&title=Special:Search&redirs=1&advanced=1&fulltext=Advanced+search&search=Ruby&"