DZone Snippets: name code

Get the name of the script that is running

gregg.irwin (Gregg Irwin) — Thu, 05 Apr 2007 18:14:10 GMT



script-name: does [system/options/script]

Get the currently running method name in Ruby

ntk () — Thu, 05 Oct 2006 19:00:47 GMT

from: http://www.ruby-forum.com/topic/75258

Author: Robert Klemme





module Kernel

 private

    def this_method_name

      caller[0] =~ /`([^']*)'/ and $1

    end

end





class Foo

 def test_method

   this_method_name

 end

end



puts Foo.new.test_method    # => test_method

Convert string to underscore_name

stancell (Algimantas Stancelis) — Sat, 23 Sep 2006 17:52:55 GMT

Converts "My House" to "my_house".
Converts " Peter's nice car " to "peters_nice_car".
Converts "_88" to "88"



function string_to_underscore_name($string)

{

    $string = preg_replace('/[\'"]/', '', $string);

    $string = preg_replace('/[^a-zA-Z0-9]+/', '_', $string);

    $string = trim($string, '_');

    $string = strtolower($string);

    

    return $string;

}

helper to determine if radio/checkbox needs to be checked

moneypenny () — Thu, 07 Sep 2006 16:25:27 GMT

I frequently have to use methods such as 'radio_button' and 'check_box_tag' when I don't have an object with a method that will automatically determine the value of the input field. Therefore, I have to check to see if a certain parameter has been passed, and if so, if the parameter's value matches that of the input's value. This method does that.

It's designed to be used in a Rails helper. You can either pass it the object, method, and value (the same parameters as, for example, radio_button) or name and value (the same parameters as radio_button_tag).

def checked?( *args )

  if args.length == 3

    object, method, value = args

    if params[object] && params[object][method] && params[object][method] == value

      'checked'

    end

  elsif args.length == 2

    name, value = args

    if params[name] && params[name] == value

      true

    end

  end

end

Here's an example usage:
<%= radio_button 'person', 'age', '12', :checked => checked?( 'person', 'age', '12' ) %>

If params[:person][:age] exists and it equals '12', then 'checked?' returns 'checked'; otherwise, it returns nil.

HTML 4.0 color names

korakot (Korakot Chaovavanich) — Wed, 01 Mar 2006 20:02:09 GMT

There are 16 of them



Black  	#000000

Silver 	#C0C0C0

Gray 	#808080

White 	#FFFFFF

Maroon 	#800000

Red 	#FF0000

Purple 	#800080

Fuchsia #FF00FF

Green 	#008000

Lime 	#00FF00

Olive 	#808000

Yellow 	#FFFF00

Navy 	#000080

Blue 	#0000FF

Teal 	#008080

Aqua 	#00FFFF

From this page.

Converting Between Different Naming Convetions

korakot (Korakot Chaovavanich) — Sun, 18 Sep 2005 14:12:35 GMT

From Sami Hangaslammi's recipe.



import re



def cw2us(x): # capwords to underscore notation

    return re.sub(r'(?<=[a-z])[A-Z]|(?", x).lower()



def mc2us(x): # mixed case to underscore notation

    return cw2us(x)



def us2mc(x): # underscore to mixed case notation

    return re.sub(r'_([a-z])', lambda m: (m.group(1).upper()), x)



def us2cw(x): # underscore to capwords notation

    s = us2mc(x)

    return s[0].upper()+s[1:]

Result



>>> cw2us("PrintHTML")

'print_html'

>>> cw2us("IOError")

'io_error'

>>> cw2us("SetXYPosition")

'set_xy_position'

>>> cw2us("GetX")

'get_x'