lightningdb

# brainfreeze!
# what is the idiomatic ruby for this:
# if the var is an array, do_something with each element, otherwise just do something with the var
if var.is_a?(Array)
  var.each do |element|
    do_something(element)
  end
else
  do_something(var)
end

lightningdb

# For Level 16 developers

# Instead of:

if !retailers.empty?

# Use this:

unless retailers.empty?

lightningdb

# instead of:

if retail_chains && retail_chains.size > 0
  return retail_chains[0]
end

# you could write:

retail_chains.first unless retail_chains.blank?

lightningdb

# longer and harder to read, with redundant lines

facet_values_after = []
facet_values.each do | facet_value |
  facet_value = facet_value.gsub(/\_/, '\-')
  facet_values_after << facet_value.gsub(/"/, '\"')
end
return facet_values_after

# can be turned into

lightningdb

many_elements.each do |foo| 
  dict[foo] ||= expensive_computation
end

lightningdb

var ||= the_value

lightningdb

# rather than

if some_condition
  return true
else
  return false
end

# you can use

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# A method signature such as:
def blah(file, underscore_to_hyphen=true)

# will be called like so:
blah(file, true)
# where true could also be false

# this is a code smell, since it is impossible to tell 
# from the call what the boolean does

lightningdb

#!/bin/sh

# get current branch and tag
branch=`git symbolic-ref HEAD 2>/dev/null | cut -d"/" -f 3`;
tag=`git describe --tags`;

# if current tag has annotations showing number of commits since tagging, then use current branch
destination="$tag"
if [[ "$tag" == *-* ]]
then

lightningdb

javascript: var asin_elements, asin;asin_elements = document.getElementsByName('ASIN'); if (asin_elements.length == 0) { asin_elements = document.getElementsByName('ASIN.0'); };if (asin_elements.length == 0) { alert('Sorry, this doesn\'t appear to be an Amazon book page.'); }else {  asin = asin_elements[0].value;  if (asin.match(/\D/) === null) { var x = window.open('http://www.goodreads.com/review/isbn/'+ asin, 'add_review'); } else { var x = window.open('https://www.goodreads.com/search?q='+ asin); } x.focus();}