Will the snow leopard system requires that version of xcode and sdk?

I am a novice, now installed snow leopard
Intends to develop small applications
ipad
Will the snow leopard system, that version of xcode and sdk can be used? Some will be stable? Thank you!
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Xcode3.2.6 can I use is this.
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Installation Xcode4.X it, mainstream ~
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4X lion seems to be a novice, then that version is not important
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You can download xcode4.2 for snow leopard, but we recommend upgrading to lion, using xcode 4.2, will be relatively more stable
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3.2.4 personal feeling okay.
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Can use the 4.2 version of xcode ``
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You can install the latest version

qq: 1813222818
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references, 4th Floor, ugg reply:

can download xcode4.2 for snow leopard, but we recommend upgrading to lion, using xcode 4.2, will be relatively more stable

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