FilterRules

FilterRules[rules,patt]

filters the list rules by picking out only those rules whose left-hand sides match patt.

FilterRules[rules,{patt1,patt2,}]

picks out rules whose left-hand sides match any of the patti.

Details

  • The rules in the list rules can be either -> or :> rules.
  • If any of the patti is a rule of the form lhs->rhs, then it is treated the same as lhs.
  • If patti is a string, it will also match a symbol whose name is the string.
  • FilterRules[rules,Except[patt]] gives all rules except those whose left-hand sides match patt.

Examples

Basic Examples  (2)

Filter for options that appear in Plot:

Wolfram Research (2007), FilterRules, Wolfram Language function, https://reference.wolfram.com/language/ref/FilterRules.html.

Text

Wolfram Research (2007), FilterRules, Wolfram Language function, https://reference.wolfram.com/language/ref/FilterRules.html.

BibTeX

@misc{reference.wolfram_2021_filterrules, author="Wolfram Research", title="{FilterRules}", year="2007", howpublished="\url{https://reference.wolfram.com/language/ref/FilterRules.html}", note=[Accessed: 29-November-2021 ]}

BibLaTeX

@online{reference.wolfram_2021_filterrules, organization={Wolfram Research}, title={FilterRules}, year={2007}, url={https://reference.wolfram.com/language/ref/FilterRules.html}, note=[Accessed: 29-November-2021 ]}

CMS

Wolfram Language. 2007. "FilterRules." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/FilterRules.html.

APA

Wolfram Language. (2007). FilterRules. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/FilterRules.html