ContainsExactly

ContainsExactly[list1,list2]

yields True if list1 contains exactly the same elements as list2.

ContainsExactly[list2]

is an operator form that yields True when the object to which it is applied contains exactly the same elements as list2.

Details and Options

Examples

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Basic Examples  (2)

Both lists contain exactly the same elements:

The lists contain different elements:

Scope  (4)

Check whether certain chemicals contain exactly certain elements:

Use ContainsExactly in operator form:

Find music works composed in 1982 by Bernie Taupin and Elton John:

ContainsExactly works with associations:

Options  (2)

SameTest  (2)

By default, ContainsExactly considers elements to be the same if they are identical:

Changes of units are taken into account, as long as they represent the exact same quantity:

Numerical approximations are not considered as the same object:

Use Equal as the comparison function to have numerical tolerance:

String comparisons are case sensitive by default:

Convert to lower case before comparing:

Applications  (1)

Two anagram words or phrases contain the same letters:

The word "parsley" is an anagram of the word "replays":

These two phrases contain the same letters:

Properties & Relations  (3)

ContainsExactly[list1,list2] is equivalent to testing for equality as sets:

ContainsExactly is a symmetric function of its arguments. That is, ContainsExactly[list1,list2]==ContainsExactly[list2,list1]:

ContainsExactly[list1,list2] is equivalent to And[ContainsAll[list1,list2],ContainsOnly[list1,list2]]:

Wolfram Research (2015), ContainsExactly, Wolfram Language function, https://reference.wolfram.com/language/ref/ContainsExactly.html.

Text

Wolfram Research (2015), ContainsExactly, Wolfram Language function, https://reference.wolfram.com/language/ref/ContainsExactly.html.

CMS

Wolfram Language. 2015. "ContainsExactly." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ContainsExactly.html.

APA

Wolfram Language. (2015). ContainsExactly. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ContainsExactly.html

BibTeX

@misc{reference.wolfram_2025_containsexactly, author="Wolfram Research", title="{ContainsExactly}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/ContainsExactly.html}", note=[Accessed: 29-May-2025 ]}

BibLaTeX

@online{reference.wolfram_2025_containsexactly, organization={Wolfram Research}, title={ContainsExactly}, year={2015}, url={https://reference.wolfram.com/language/ref/ContainsExactly.html}, note=[Accessed: 29-May-2025 ]}