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  • $\begingroup$ I think the OP is trying to write a "macro" that expand at the first element of With. It's rather hard for me . $\endgroup$ Commented Jul 15, 2013 at 15:04
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    $\begingroup$ @mm.Jang checked it and it works with 9... $\endgroup$ Commented Jul 15, 2013 at 15:36
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    $\begingroup$ @Stefan I don't really know what happened, can't reproduce this anymore. I believe I copied the code in a right way. $\endgroup$ Commented Jul 15, 2013 at 15:37
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    $\begingroup$ @mm.Jang i know exactly what you mean...fiddling around with replacements it is sometimes best to start with a fresh kernel...or do the replacements inside a With. $\endgroup$ Commented Jul 15, 2013 at 15:53
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    $\begingroup$ Or, perhaps a bit simpler, With[{list = Thread[params -> vals]},(*fancy operation*){a, b, c, d} /. list] $\endgroup$ Commented Jul 15, 2013 at 23:33