From: Eric Hodel <drbrain@...7.net>
Date: 2005-11-09T05:46:31+09:00
Subject: Re: Better way to build string

On Nov 8, 2005, at 11:00 AM, Eero Saynatkari wrote:

> marcus wrote:
>> I'm trying to build a query string based on an array of  
>> properties. Is there a shorter/nicer way to do the following?
>>   def build_query_string(properties, prop_type)
>>     result = ""
>>     properties.each do |item|
>>       if prop_type == "tag"
>>         result += " #{item.name}=#{item.value}"
>>       else
>>         if result == ""
>>           result = "?"
>>         else
>>           result += "&"
>>         end
>>         result += "#{item.name}=#{item.value}"
>>       end
>>     end
>>     result
>>   end
>
> Perhaps you can modify this for your needs:
>
> properties.inject('?') {|memo, (key, value)| memo << "#{key}=# 
> {value}&" }

"?" + properties.map { |pair| pair.join('=') }.join('&')

Shorter, more expressive, omits the trailing '&'

-- 
Eric Hodel - drbrain@segment7.net - http://segment7.net
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