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Struggling to convert imported formula to function

I have successfully imported a formula into Mathematica. The formula is detailed in the "Euclidean.m" file. It is in piecewise form, and I set it equal to "de", which is how the formula is defined in the file.

I would like to convert this "de" formula to the function dE[t]. When I try to do this, I am told t_ is protected. I have read about this issue, but I am stuck. The fix should be simple, but I am just not seeing it. Relevant files are attached. Any suggestions?

Attachments:
Euclidean.m
POSTED BY: Patrick McMullen
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Does this work well for you?:

Clear[t];
deOLD = dE; (* assuming you've done the Import[] *)
ClearAll[dE];
dE[t_] = deOLD; (* = here, not := *)
POSTED BY: Michael Rogers

Thank you.
POSTED BY: Patrick McMullen
Eric Rimbey
Eric Rimbey
Posted 3 days ago
POSTED BY: Eric Rimbey

Thank you. I knew I could work around the issue, but I just wanted to make sure I could convert it to a function.
POSTED BY: Patrick McMullen

POSTED BY: Patrick McMullen
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