grapes-plus-equals-grapes: Add In Place
In refer: Create Object References

Increase the value of an object on the search path. Equivalent to '+=' in other languages. See incr for details on implementation.

1	x %+=% value

`x`	object to be modified; can be a symbol, character, or extraction language object.
`value`	value with which to change `x` by

the new value of x, invisibly

1
2
3

x <- 1:10
x %+=% 10
identical(x, 11:20)  # TRUE

refer documentation built on Nov. 8, 2021, 5:08 p.m.

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