ContainsAll

ContainsAll[e1,e2]

yields True if e1 contains all of the elements of e2.

ContainsAll[e2]

is an operator form that yields True when the object to which it is applied contains all of the elements of e2.

Examples

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Basic Examples  (2)

The first list contains all elements of the second list:

The first list does not contain all elements of the second list:

Scope  (4)

The English word facetious contains all five vowels:

Use ContainsAll in operator form:

Find the movies whose cast contains both Angelina Jolie and Brad Pitt:

ContainsAll works with associations:

Options  (2)

SameTest  (2)

By default, ContainsAll 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  (2)

Randomly find 10 English words containing all five vowels:

Take the first character of each word of a text:

It does not contain words starting with all letters of the alphabet:

This larger text does contain words starting with all letters of the alphabet:

All of them do not appear as capital first letters in the text:

Properties & Relations  (3)

ContainsAll[list1,list2] is equivalent to SubsetQ[list1,list2]:

Reversing the arguments of ContainsAll is equivalent to using ContainsOnly:

ContainsAll[list,{}] always returns True:

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

Text

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

BibTeX

@misc{reference.wolfram_2020_containsall, author="Wolfram Research", title="{ContainsAll}", year="2015", howpublished="\url{https://reference.wolfram.com/language/ref/ContainsAll.html}", note=[Accessed: 01-December-2020 ]}

BibLaTeX

@online{reference.wolfram_2020_containsall, organization={Wolfram Research}, title={ContainsAll}, year={2015}, url={https://reference.wolfram.com/language/ref/ContainsAll.html}, note=[Accessed: 01-December-2020 ]}

CMS

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

APA

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