# infix (<), infix ⊂

1 | language documentation Sets, bags, and mixes |

1.1 | (Sets, bags, and mixes) infix (<), infix ⊂ |

2 | language documentation Operators |

2.1 | (Operators) infix (<), infix ⊂ |

Documentation for infix `(<), infix ⊂`

assembled from the following types:

# language documentation Sets, bags, and mixes

## (Sets, bags, and mixes) infix (<), infix ⊂

Returns `True`

if `$a`

is a **strict subset** of `$b`

, else `False`

. More information, Wikipedia definition.

# language documentation Operators

From Operators

## (Operators) infix (<), infix ⊂

multi sub infix:<< (<) >>(, --> Bool)multi sub infix:<⊂>(, --> Bool)

Returns `True`

if `$a`

is a **strict subset** of `$b`

, i.e., that all the elements of `$a`

are elements of `$b`

but `$a`

is a smaller set than `$b`

.

say (1,2,3) (<) (2,3,1); # OUTPUT: «False»say (2,3) (<) (2,3,1); # OUTPUT: «True»say 4 ⊂ (1,2,3); # OUTPUT: «False»

`⊂`

is equivalent to `(<)`

, at codepoint U+2282 (SUBSET OF).