[#5322] O(1) performance for insertions/deletions at the front of an Array/String — Eric Mahurin <eric_mahurin@...>

I just did some benchmarks on push, pop, shift, and unshift

24 messages 2005/07/01
[#5338] Re: O(1) performance for insertions/deletions at the front of an Array/String — Mathieu Bouchard <matju@...> 2005/07/02

On Fri, 1 Jul 2005, Eric Mahurin wrote:

[#5348] Re: O(1) performance for insertions/deletions at the front of an Array/String — Eric Mahurin <eric_mahurin@...> 2005/07/02

--- Mathieu Bouchard <matju@artengine.ca> wrote:

[#5357] Re: O(1) performance for insertions/deletions at the front of an Array/String — Mathieu Bouchard <matju@...> 2005/07/03

On Sat, 2 Jul 2005, Eric Mahurin wrote:

[#5359] Re: O(1) performance for insertions/deletions at the front of an Array/String — Eric Mahurin <eric_mahurin@...> 2005/07/03

--- Mathieu Bouchard <matju@artengine.ca> wrote:

[#5361] Re: O(1) performance for insertions/deletions at the front of an Array/String — Mathieu Bouchard <matju@...> 2005/07/03

On Sun, 3 Jul 2005, Eric Mahurin wrote:

[#5362] Re: O(1) performance for insertions/deletions at the front of an Array/String — Eric Mahurin <eric_mahurin@...> 2005/07/03

--- Mathieu Bouchard <matju@artengine.ca> wrote:

[#5365] Re: O(1) performance for insertions/deletions at the front of an Array/String — Yukihiro Matsumoto <matz@...> 2005/07/04

Hi,

[#5367] Re: O(1) performance for insertions/deletions at the front of an Array/String — Eric Mahurin <eric_mahurin@...> 2005/07/04

--- Yukihiro Matsumoto <matz@ruby-lang.org> wrote:

[#5368] Re: O(1) performance for insertions/deletions at the front of an Array/String — Yukihiro Matsumoto <matz@...> 2005/07/04

Hi,

[#5372] Re: O(1) performance for insertions/deletions at the front of an Array/String — Florian Gro<florgro@...> 2005/07/04

Yukihiro Matsumoto wrote:

[#5420] Sydney Developer Preview 1 released — Evan Webb <evanwebb@...>

Sydney, an experimental ruby interpreter, has been released!

15 messages 2005/07/11
[#5424] Re: [ANN] Sydney Developer Preview 1 released — Evan Webb <evanwebb@...> 2005/07/12

Thanks everyone for the feedback so far!

Re: O(1) performance for insertions/deletions at the front of an Array/String

From: Mathieu Bouchard <matju@...>
Date: 2005-07-03 11:19:31 UTC
List: ruby-core #5357
On Sat, 2 Jul 2005, Eric Mahurin wrote:

> Not exactly what I was thinking.  I was thinking that when you
> try to unshift and you have no free space available to the
> left, you'd reallocate to a new area growing by a certain
> percentage - just like you do when you run out of space on the
> right.

Oh. Yeah, that's exactly what i meant, sorry for the confusion.

> I wonder if any other high-level languages do something like what I'm
> talking about with their standard stretchable arrays and strings.

Perl does it for its arrays, at least.

> OT a little ... regarding insertion/deletion do you think we can also
> make a few methods in String vs Array a little more consistent:

Part of Matz's plan for Ruby 2 is to make String and Array less consistent
with each other.

I'd rather have them more consistent, and almost identical, but a long
time ago I figured out I wouldn't stay in the programming language design
business.

,-o--------o--------o--------o-. ,---. irc.freenode.net #dataflow |
| The Diagram is the Program tm| | ,-o-------------o--------------o-.
`-o------------o-------------o-' | | Mathieu Bouchard (Montr饌l QC) |
  | t駘駱hone:+1.514.383.3801`---' `-o-- http://artengine.ca/matju -'


In This Thread