SetAttributes

SetAttributes[symbol,attr]

adds attr to the list of attributes of the symbol symbol.

SetAttributes["symbol",attr]

adds attr to the attributes of the symbol named "symbol" if it exists.

SetAttributes[s,{attr1,attr2,}]

sets several attributes at a time.

SetAttributes[{s1,s2,},attrs]

sets attributes of several symbols at a time.

Details

Examples

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Basic Examples  (2)

Scope  (3)

Add an attribute to the list of attributes of a symbol:

Add more attributes; the previous ones are retained:

Add several attributes:

Add the same attributes to several symbols:

Properties & Relations  (6)

Set a single attribute for the symbols f and g:

SetAttributes adds to the already existing attributes; Attributes[g]={..} resets the list:

SetAttributes is equivalent to this assignment to the attributes:

Use ClearAttributes to clear a particular attribute:

Protecting a symbol is equivalent to setting the Protected attribute:

You can still change the attributes of a protected symbol:

After setting the attribute Locked, no more changes to the attributes can be made:

A locked symbol can no longer be unprotected, as the Protected attribute cannot be cleared:

SetAttributes has the attribute HoldFirst:

This sets attributes of the symbol syms itself:

This sets the attributes of all symbols in the list syms:

Neat Examples  (1)

The 10 system symbols with the most attributes:

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

Text

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

BibTeX

@misc{reference.wolfram_2021_setattributes, author="Wolfram Research", title="{SetAttributes}", year="1988", howpublished="\url{https://reference.wolfram.com/language/ref/SetAttributes.html}", note=[Accessed: 25-September-2021 ]}

BibLaTeX

@online{reference.wolfram_2021_setattributes, organization={Wolfram Research}, title={SetAttributes}, year={1988}, url={https://reference.wolfram.com/language/ref/SetAttributes.html}, note=[Accessed: 25-September-2021 ]}

CMS

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

APA

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