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Re: Is it useful to make a 64 bit app? [Was]: How can users check if their mac is 64-bit-capable?
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Re: Is it useful to make a 64 bit app? [Was]: How can users check if their mac is 64-bit-capable?


  • Subject: Re: Is it useful to make a 64 bit app? [Was]: How can users check if their mac is 64-bit-capable?
  • From: Sherm Pendley <email@hidden>
  • Date: Thu, 11 Dec 2008 14:51:21 -0500

On Dec 11, 2008, at 2:16 PM, Gustavo Pizano wrote:

In an apple doc I read that mos of leopard app doesn't need to convert to 64 bit architecture, but later on the document its says something like, that in the future the apps should take advantage of the new 64 bit api and frameworks, or that what I understood, so, I was wondering, if Im starting a new app (small one), should I build it for a 64 bit architecture or no?

I wouldn't want to build *exclusively* for 64-bit at this point - there's still a lot of 1st-generation Core Macs out there, and even some G4s, as well as some machines running Tiger. So IMHO it seems a little premature to go 32-bit only.


That said, it's not an all-or-nothing proposal. Universal binaries can include both 32- and 64-bit binaries. For a smooth transition, you could start supporting 64-bit right now, without necessarily having to require it. Eventually, the time will come when it's appropriate to drop support for 32-bit machines and OS versions.

, if so what should I take care of?, instead of using int use NSInteger or NSUInteger, alos instead of float use CGFloat, take care of the way I encode and decode ? I guess im missing lots, and what else should I change the build target to be 64 bit architecture?

any guidance?

As usual, Apple's own docs are a good place to start:

<http://developer.apple.com/DOCUMENTATION/Darwin/Conceptual/64bitPorting/intro/chapter_1_section_1.html >

or should I just "let it be, let it be"

Great song. :-)

sherm--


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References: 
 >How can users check if their mac is 64-bit-capable? (From: Russ <email@hidden>)
 >Re: How can users check if their mac is 64-bit-capable? (From: Sherm Pendley <email@hidden>)
 >Is it useful to make a 64 bit app? [Was]: How can users check if their mac is 64-bit-capable? (From: Gustavo Pizano <email@hidden>)

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