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Macaulay2
>
The Macaulay2 language
>
lists and sequences
>
BasicList #? ZZ
BasicList #? ZZ -- check for element in list
Synopsis
Operator:
#?
Description
x#?i
-- tells whether there is an
i
-th element in the list
x
.
i1 : {a,b,c} #? 2 o1 = true
i2 : {a,b,c} #? 22 o2 = false
See also
BasicList # ZZ
-- get element from list