Could swap damage a SSD, maybe - I'm not sure. But it only could if it were actually used. With 8Gb ram it's unlikly to be used. A swap partition will not harm a SSD simply by being there.
If you intent to use hibernation you'll need a swap partition (I think), but otherwise I'd say don't bother. If it's ever needed you can also make a swap file (I don't think these work for hibernation, I could be wrong).
]]>I will install Archlinux on a hard disk com SSD OS only.
What??
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