ruby - using an alias name for hash key value -


i have json data receive , json.parse hash. hash key names integer strings data["0"], data["1"], data["2"], etc... each value correspond state. 0 => start, 1 => stop, 2 => restart.

i can't change source json data make key more readable. each hash have 5 pairs correspond 5 different states.

i wondering if there nice way me alias numbers meaningful names when referencing hash key value don't have use number.

at moment i'm using constants below, thinking there might nicer, more ruby way. use hash or struct can use data[states.start] or something?

state_start     =       "0" state_stop      =       "1" state_restart   =       "2"  data = json.parse value puts data[state_start]

thanks

i think constants fine. if want rubify code bit, can, example, wrap source hash in object translate method names.

class myhash   def initialize(hash)     @hash = hash   end    mapping = {     start:   '0',     stop:    '1',     restart: '2',   }    # dynamically define methods   #   # def start   #   @hash['0']   # end   #   # or can use method_missing     mapping.each |method_name, hash_key|     define_method method_name       @hash[hash_key]     end   end end  mh = myhash.new({'0' => 'foo', '1' => 'bar'})  mh.start # => "foo" mh.stop # => "bar"

Comments

Post a Comment

Popular posts from this blog

apache - Remove .php and add trailing slash in url using htaccess not loading css -

i have add following code htaccess file removing .php extension , add trailing slash urls. worked fine reduced page loading speed , css code not loading @ all. pages ugly. please help rewriteengine on rewritebase / ## hide .php extension snippet # externally redirect /dir/foo.php /dir/foo rewritecond %{the_request} ^[a-z]{3,}\s([^.]+)\.php [nc] rewriterule ^ %1/ [r,l] # add trailing slash rewritecond %{request_filename} !-f rewritecond %{request_uri} !/$ rewriterule . %{request_uri}/ [l,r=301] # internally forward /dir/foo /dir/foo.php rewritecond %{request_filename} !-d rewritecond %{request_filename}.php -f rewriterule ^(.*?)/?$ $1.php [l] we can rewrite urls using .htaccess files. before writing in .htaccess files need verify kind of server using. can check server adding a <?php phpinfo(); ?> in php page. ensure mod_rewrite module enabled in apache server. can identified checking phpinfo included page. common methods used url rewriting follows ...
Read more

javascript - jQuery show full size image on click -

pretty self explanatory not workking . i want display full image when user click on image... yes know there tons of plugins but i want keep simple. any idea ? css : .full { display: none; width: 500px; height: 500px; margin-left: 100px; margin-top: -300px; position: fixed; background-color: #f00; z-index: 6; } .thumbnail { width: 50px; height: 50px; } html: <img class="thumbnail" src="http://4.bp.blogspot.com/-uhbdp2esxng/txneptvi92i/aaaaaaaaaky/upfqis7zto0/s1600/rihanna-wallpaper.jpg"> jquery: $(document).ready(function() { $('.thumbnail').on('click', function() { var img = $('<img />',{src:this.src,'class':'full'}); $('.full').html(img).show(); console.log('done!'); }); }); try looking how jquery works. $(document).ready(function() { $('.thumbnail').on('click', function(...
Read more