Protect

Protect[s1,s2,…]

sets the attribute Protected for the symbols si.

Protect["form1","form2",…]

protects all symbols whose names match any of the string patterns formi.

Details

  • Protect allows abbreviated string patterns containing the following metacharacters:
  • *zero or more characters
    @one or more characters, excluding uppercase letters
    \\*, etc.literal *, etc.
  • Protect["context`*"] protects all symbols in a particular context.

Examples

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Basic Examples  (1)

Define and protect a function:

The function definition can no longer be changed:

Scope  (2)

Protect several symbols:

Protect all symbols matching a string pattern:

Applications  (1)

Protect all symbols in the current context:

Properties & Relations  (4)

Protecting a symbol is equivalent to setting the Protected attribute:

Protect returns the list of symbols actually protected:

If a symbol is already protected, it is not protected again:

No more definitions can be made for a protected symbol:

To protect all symbols given in a variable, use Evaluate:

Wolfram Research (1988), Protect, Wolfram Language function, https://reference.wolfram.com/language/ref/Protect.html.

Text

Wolfram Research (1988), Protect, Wolfram Language function, https://reference.wolfram.com/language/ref/Protect.html.

BibTeX

@misc{reference.wolfram_2020_protect, author="Wolfram Research", title="{Protect}", year="1988", howpublished="\url{https://reference.wolfram.com/language/ref/Protect.html}", note=[Accessed: 22-April-2021 ]}

BibLaTeX

@online{reference.wolfram_2020_protect, organization={Wolfram Research}, title={Protect}, year={1988}, url={https://reference.wolfram.com/language/ref/Protect.html}, note=[Accessed: 22-April-2021 ]}

CMS

Wolfram Language. 1988. "Protect." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/Protect.html.

APA

Wolfram Language. (1988). Protect. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/Protect.html