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Is there a way to display Quantity[] in full form in the output? I know you could use Quantity[valuse, Unit]//InputForm, but what I want is something like Quantity[Placeholder["tip"], "Meters"], but with an actual named placeholder instead of the code.

(I am trying to use this in the user interface, so the the placeholder could also serve as a tooltip box. This is something I would hope it could looklike: enter image description here)

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2 Answers 2

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Defer[Quantity][Placeholder["tip"],"Meters"]

enter image description here

or

HoldForm[Quantity][Placeholder["tip"],"Meters"]

enter image description here

The second method requires ReleaseHold to evaluate.

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You can also use Inactive in V10, of course the appearance will be slightly different.

Inactive[Quantity][Placeholder["Tooltip"], "Meters"]

Mathematica graphics

And use Activate to evaluate it:

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