OrderlessPatternSequence[p1,p2,…]
is a pattern object that represents a sequence of arguments matching p1,p2,… in any order.


OrderlessPatternSequence
OrderlessPatternSequence[p1,p2,…]
is a pattern object that represents a sequence of arguments matching p1,p2,… in any order.
Details

- OrderlessPatternSequence[] represents a sequence of zero length.
- OrderlessPatternSequence can appear anywhere inside a pattern but cannot be the only element of a pattern.
Examples
open all close allBasic Examples (3)
Scope (2)
Use OrderlessPatternSequence to make some of the function arguments orderless:
Properties & Relations (1)
During expression pattern matching, PatternSequence matches expressions in fixed order:
OrderlessPatternSequence matches expressions in arbitrary order:
Possible Issues (1)
OrderlessPatternSequence matches against a sequence of patterns:
Related Guides
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- Patterns
History
Text
Wolfram Research (2015), OrderlessPatternSequence, Wolfram Language function, https://reference.wolfram.com/language/ref/OrderlessPatternSequence.html.
CMS
Wolfram Language. 2015. "OrderlessPatternSequence." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/OrderlessPatternSequence.html.
APA
Wolfram Language. (2015). OrderlessPatternSequence. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/OrderlessPatternSequence.html
BibTeX
@misc{reference.wolfram_2025_orderlesspatternsequence, author="Wolfram Research", title="{OrderlessPatternSequence}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/OrderlessPatternSequence.html}", note=[Accessed: 11-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_orderlesspatternsequence, organization={Wolfram Research}, title={OrderlessPatternSequence}, year={2015}, url={https://reference.wolfram.com/language/ref/OrderlessPatternSequence.html}, note=[Accessed: 11-August-2025]}