Find a component definition in a list

glro

i select an object in the model
If it is a component, the code gets its definition and puts it in a string named "ref"

for e in selection
        if e.is_a? Sketchup;;ComponentInstance
            ref = e.definition.name.to_s
        end 
end

then i want to compare the "ref" to strings in a list (an array?) called "references", and find the one that matches

for z in (0..715) do
		if references[z] == ref
			puts "hello"
		end
end

I know there is one string among the 716 strings, that matches to "ref", but the program never says "hello", doesn't find it

what am i missing? Is it a bug in Ruby?

TIG

Define 'ref' OUTSIDE of the block iteration

ref=nil
for e in selection
  if e.is_a? Sketchup;;ComponentInstance
    ref = e.definition.name.to_s
  end
end

Some simpler code would be

ref=selection.grep(Sketchup;;ComponentInstance)[0]
return nil unless ref

Then

references.each{|r|
  if ref==r
    puts 'hello'
    break
  end
}

OR MUCH simpler

puts 'hello' in references.include?(ref)

Are you sure that the exact 'name' is in the array ?
What is 'ref' ??

glro

@glro said:

what am i missing? Is it a bug in Ruby?

sorry for asking the question, i found the answer...

		for z in (0..715) do
			#rstrip to suppress whitespaces
			if references[z].rstrip == ref
			puts "hello"
			end #if
		end #for z in

i had whitespaces at the end of references[z]; to remove them:
52 str.rstrip
Returns a copy of str with trailing whitespace removed.

Ruby - Strings

Ruby - Strings - A String object in Ruby holds and manipulates an arbitrary sequence of one or more bytes, typically representing characters that represent human language.

(www.tutorialspoint.com)

funny how programming depends so much on very trivial details...

thomthom

A less verbose version:.

<span class="syntaxdefault">result&nbsp;</span><span class="syntaxkeyword">=&nbsp;</span><span class="syntaxdefault">references</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">find&nbsp;</span><span class="syntaxkeyword">{&nbsp;|</span><span class="syntaxdefault">string</span><span class="syntaxkeyword">|&nbsp;</span><span class="syntaxdefault">string</span><span class="syntaxkeyword">.</span><span class="syntaxdefault">rstrip&nbsp;</span><span class="syntaxkeyword">==&nbsp;</span><span class="syntaxdefault">ref&nbsp;</span><span class="syntaxkeyword">}<br /></span><span class="syntaxdefault">puts&nbsp;</span><span class="syntaxstring">'Hello'&nbsp;</span><span class="syntaxkeyword">if&nbsp;</span><span class="syntaxdefault">result</span>