Defines a selector that takes a value x:T and number that represents the position of x in whichever sequence it is applied to and transforms that T into a TOut
x:T
x
T
TOut
{@link _map}
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Defines a selector that takes a value
x:T
and number that represents the position ofx
in whichever sequence it is applied to and transforms thatT
into aTOut
Example