Ruby convenience methods

convenience.rb

#Given an array, get counts of occurences for each element
#H/T http://jerodsanto.net/2013/10/ruby-quick-tip-easily-count-occurrences-of-array-elements/
def count_array_element_occurences(arr)
  arr.each_with_object(Hash.new(0)) { |word,counts| counts[word] += 1 }
end

#Given a hash, convert it to an HTML table
def hash_to_table(h)
  t = "<table><thead>"
  if h.present?
    h[0].keys.each { |k| t+= "<th>" + k.to_s + "</th>" }
    t += "</thead><tbody>"
    h.each do |r|  
      t += "<tr>"
      r.values.each {|c| t += "<td>" + c.to_s + "</td>" } 
      t += "</tr>"
    end
  end
  t += "</tbody></table>"
  t.html_safe
end

#Clipboard copy and paste
#https://coderwall.com/p/qp2aha/ruby-pbcopy-and-pbpaste
def pbcopy(input)
  str = input.to_s
  IO.popen('pbcopy', 'w') { |f| f << str }
  str
end

def pbpaste
  `pbpaste`
end