1 vote

Error handling of Databin

Databin does not evaluate when the bin does not exist. Calling it with an invalid id err = Databin["13X7XXXJH"] does ...
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  • 2,435
1 vote
Accepted

Holding after evaluation

Here's another interpretation of the OP's objective, based on some parts of the code that don't make sense (to me, as yet) unless frac is supposed to generate a new ...
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  • 219k
1 vote

Holding after evaluation

Try "Label" -> With[{tmp = frac}, HoldForm[DisplayForm[tmp] + DisplayForm[tmp]]] instead to evaluate before you hold.
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