[ruby-core:28515] Re: [Feature #905] Add String.new(fixnum) to preallocate large buffer

On Fri, Mar 5, 2010 at 17:25, Caleb Clausen <[e-mail]> wrote:
> On 3/5/10, Yusuke ENDOH <[e-mail]> wrote:
>> 2010/3/5 Kornelius Kalnbach <[e-mail]>:

>>> How big would the buffer size have to be for this template?
>>>
>>>  <p><%= link_to @record.name, @record %></p>

>> Yes, it is generally difficult to determine the size.
>>
>> We may be able to estimate it by using domain knowledge in some cases.
>> (e.g., certain page size is empirically known as about 10KB, etc.)
>> But if the expectation is disappointed, it will cause wasteful memory
>> allocation or no speed up.

> Generally, a given template should expand to about the same size every
> time.

I’m getting the feeling thath the only real use case that we’ve got
for this so far is ERb.  Wouldn’t it make more sense to change the way
ERb (and similar “string concatenators”) creates its result?