[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?
>>>
>>> =C2=A0<p><%=3D 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=E2=80=99m getting the feeling thath the only real use case that we=E2=80=
=99ve got
for this so far is ERb.  Wouldn=E2=80=99t it make more sense to change the =
way
ERb (and similar =E2=80=9Cstring concatenators=E2=80=9D) creates its result=
?