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From: Aldric Giacomoni on 17 Nov 2009 14:13
John Mcleod wrote:
> what is happening here?
> h.tr(" ", "_").delete("^a-zA-Z0-9_#")
>
> it looks like you're checking a table row for an instance of " " and
> replacing with "_"
> but I'm unsure of the ".delete("^a-zA-Z0-9_")"
>
> John

http://rubular.com/ is your best friend.
--
Posted via http://www.ruby-forum.com/.

From: James Edward Gray II on 17 Nov 2009 14:15
On Nov 17, 2009, at 1:13 PM, Aldric Giacomoni wrote:

> John Mcleod wrote:
>> what is happening here?
>> h.tr(" ", "_").delete("^a-zA-Z0-9_#")
>>
>> it looks like you're checking a table row for an instance of " " and
>> replacing with "_"
>> but I'm unsure of the ".delete("^a-zA-Z0-9_")"
>>
>> John
>
> http://rubular.com/ is your best friend.

I didn't use any regular expressions. ;)

James Edward Gray II

From: James Edward Gray II on 17 Nov 2009 14:19
On Nov 17, 2009, at 12:58 PM, John Mcleod wrote:

> In your code...
> :header_converters => lambda { |h| h.tr(" ",
> "_").delete("^a-zA-Z0-9_")},
>
> what is happening here?
> h.tr(" ", "_").delete("^a-zA-Z0-9_#")
>
> it looks like you're checking a table row for an instance of " " and
> replacing with "_"

tr(), for transliterate, is used to replace characters. You are right that I'm using it to switch all spaces to underscores.

> but I'm unsure of the ".delete("^a-zA-Z0-9_")"

delete() allows me to list characters I want to remove. It understands simple ranges, like a-z and 0-9. Also, if the first character is a ^, the entire character set is negated. Thus my call means delete all non letters, numbers, and underscore characters.

James Edward Gray II
From: Aldric Giacomoni on 17 Nov 2009 14:19
James Edward Gray II wrote:
> On Nov 17, 2009, at 1:13 PM, Aldric Giacomoni wrote:
>
>> http://rubular.com/ is your best friend.
> I didn't use any regular expressions. ;)
>
> James Edward Gray II

I'll be quiet now :-) My brain parsed it correctly and categorized it
incorrectly.
--
Posted via http://www.ruby-forum.com/.

From: John Mcleod on 17 Nov 2009 14:49
So to delete or remove say additional special characters, you would add
additional characters to the range?

h.tr(" ", "_").delete("^a-zA-Z0-9_#$-")

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