# Overload addition assignment += operator

**URL:** https://discourse.julialang.org/t/overload-addition-assignment-operator/28836
**Category:** New to Julia
**Created:** [September 17, 2019, 1:26am UTC](https://discourse.julialang.org/t/overload-addition-assignment-operator/28836 "2019-09-17T01:26:57Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![stevengj](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stevengj/32/71_2.png) [@stevengj](https://discourse.julialang.org/u/stevengj)
#### Post date: [September 17, 2019, 2:10am UTC](https://discourse.julialang.org/t/overload-addition-assignment-operator/28836/2 "2019-09-17T02:10:47Z")

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`x += y` is a synonym for `x = x + y` in Julia, so you can’t overload it.

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_[View the full topic](https://discourse.julialang.org/t/overload-addition-assignment-operator/28836)._