# Variable declarations within let blocks
**URL:** https://discourse.julialang.org/t/variable-declarations-within-let-blocks/29882
**Category:** General Usage
**Created:** [October 14, 2019, 2:10am UTC](https://discourse.julialang.org/t/variable-declarations-within-let-blocks/29882 "2019-10-14T02:10:33Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@yurivish](https://discourse.julialang.org/u/yurivish)
#### Post date: [October 14, 2019, 2:10am UTC](https://discourse.julialang.org/t/variable-declarations-within-let-blocks/29882/1 "2019-10-14T02:10:33Z")
Is there any semantic difference between the following two forms?
```julia
let a = 2, b = 3
a + b
end
```
and
```julia
let
a = 2
b = 3
a + b
end
```
I’m specifically curious about whether these are equivalent with respect to assignments that introduce new variables. I am working on a macro which currently expands to the latter.
---
### Author:  [@yuyichao](https://discourse.julialang.org/u/yuyichao)
#### Post date: [October 14, 2019, 2:28am UTC](https://discourse.julialang.org/t/variable-declarations-within-let-blocks/29882/2 "2019-10-14T02:28:34Z")
```julia
julia> function f1()
a = 1
b = 2
let a = 2, b = 3
end
return (a, b)
end
f1 (generic function with 1 method)
julia> function f2()
a = 1
b = 2
let
a = 2; b = 3
end
return (a, b)
end
f2 (generic function with 1 method)
julia> f1()
(1, 2)
julia> f2()
(2, 3)
```
`let` creates a new local scope and similar to other form of local scope (loops and with slight difference, `functions`) you can create new local variables or override nested local variables in them.
The special feature of `let` is that you can specify local variables that is not inherited from the parent local scope, when you specify them in the argument of `let`.
---
### Author:  [@yurivish](https://discourse.julialang.org/u/yurivish)
#### Post date: [October 14, 2019, 2:31am UTC](https://discourse.julialang.org/t/variable-declarations-within-let-blocks/29882/3 "2019-10-14T02:31:11Z")
Thank you, Yichao. I just realized that I was not seeing this difference due to testing in global scope.