# Help decoding this deprecation
**URL:** https://discourse.julialang.org/t/help-decoding-this-deprecation/9130
**Category:** General Usage
**Created:** [February 17, 2018, 4:40pm UTC](https://discourse.julialang.org/t/help-decoding-this-deprecation/9130 "2018-02-17T16:40:00Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@joa-quim](https://discourse.julialang.org/u/joa-quim)
#### Post date: [February 17, 2018, 4:40pm UTC](https://discourse.julialang.org/t/help-decoding-this-deprecation/9130/1 "2018-02-17T16:40:00Z")
Sorry, IMO, another `complicate it` evolution example.
How do I write the new correct form?
```julia
julia> contains(==, fieldnames(GMT.GMTgrid), Symbol("z"))
┌ Warning: `contains(eq::Function, itr, x)` is deprecated, use `any((y->begin
│ eq(y, x)
│ end), itr)` instead.
│ caller = top-level scope
└ @ Core :0
true
julia> any((y->begin == end), fieldnames(GMT.GMTgrid), Symbol("z"))
ERROR: MethodError: no method matching start(::Symbol)
Closest candidates are:
start(::SimpleVector) at essentials.jl:550
start(::Base.MethodList) at reflection.jl:659
start(::ExponentialBackOff) at error.jl:171
...
Stacktrace:
[1] reduced_indices(::Tuple{Base.OneTo{Int64}}, ::Symbol) at .\reducedim.jl:35
[2] reduced_indices at .\reducedim.jl:6 [inlined]
[3] reducedim_initarray at .\reducedim.jl:79 [inlined]
[4] reducedim_initarray at .\reducedim.jl:80 [inlined]
[5] reducedim_init at .\reducedim.jl:133 [inlined]
[6] mapreducedim at .\reducedim.jl:272 [inlined]
[7] any(::Function, ::Array{Symbol,1}, ::Symbol) at .\reducedim.jl:612
[8] top-level scope
```
---
### Author:  [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [February 17, 2018, 5:17pm UTC](https://discourse.julialang.org/t/help-decoding-this-deprecation/9130/2 "2018-02-17T17:17:09Z")
```julia
julia> struct Foo
a
z
end
julia> any(equalto(:z), fieldnames(Foo))
true
julia> any(equalto(:b), fieldnames(Foo))
false
```
---
### Author:  [@joa-quim](https://discourse.julialang.org/u/joa-quim)
#### Post date: [February 17, 2018, 5:22pm UTC](https://discourse.julialang.org/t/help-decoding-this-deprecation/9130/3 "2018-02-17T17:22:34Z")
Thanks, though that is not what the deprecation message points as to.
> [@joa-quim](#):
>
> Warning: `contains(eq::Function, itr, x)` is deprecated, use `any((y->begin eq(y, x) end), itr)` instead.
---
### Author:  [@kristoffer.carlsson](https://discourse.julialang.org/u/kristoffer.carlsson)
#### Post date: [February 17, 2018, 5:31pm UTC](https://discourse.julialang.org/t/help-decoding-this-deprecation/9130/4 "2018-02-17T17:31:23Z")
It is basically telling you to use:
```julia
julia> any(y -> y == :z, fieldnames(Foo))
true
```
---
### Author:  [@piever](https://discourse.julialang.org/u/piever)
#### Post date: [February 17, 2018, 5:37pm UTC](https://discourse.julialang.org/t/help-decoding-this-deprecation/9130/5 "2018-02-17T17:37:58Z")
Slightly off-topic: an interesting possibility is this [PR](https://github.com/JuliaLang/julia/pull/24990) who would allow to create these currified functions with underscores, so this would become:
```julia
julia> any(_ == :z, fieldnames(Foo))
true
```
which IMO is more elegant than a specialized currified version `equalto`
From what I understood, this didn’t make it for Julia 0.7 but will be part of a future release.