# Can methodswith() return everything?
**URL:** https://discourse.julialang.org/t/can-methodswith-return-everything/8026
**Category:** General Usage
**Tags:** proposal
**Created:** [December 27, 2017, 5:42pm UTC](https://discourse.julialang.org/t/can-methodswith-return-everything/8026 "2017-12-27T17:42:01Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@tk3369](https://discourse.julialang.org/u/tk3369)
#### Post date: [December 27, 2017, 5:42pm UTC](https://discourse.julialang.org/t/can-methodswith-return-everything/8026/1 "2017-12-27T17:42:01Z")
I **_love_** the `methodswith()` function as it lets me quickly find out the functions that take a particular type directly in the REPL without having to look up the type’s documentation on the web.
However, I found it to be too restrictive and it’s missing something. For example,
```julia
julia> methodswith(Dict)
29-element Array{Method,1}:
convert(::Type{Dict{K,V}}, d::Dict{K,V}) where {K, V} in Base at dict.jl:208
copy(d::Dict) in Base at dict.jl:134
delete!(h::Dict, key) in Base at dict.jl:558
done(t::Dict, i) in Base at dict.jl:578
empty!(h::Dict{K,V}) where {K, V} in Base at dict.jl:304
get(h::Dict{K,V}, key, default) where {K, V} in Base at dict.jl:478
get(default::Union{Function, Type}, h::Dict{K,V}, key) where {K, V} in Base at dict.jl:483
get!(h::Dict{K,V}, key0, default) where {K, V} in Base at dict.jl:434
get!(default::Union{Function, Type}, h::Dict{K,V}, key::K) where {K, V} in Base at dict.jl:444
get!(default::Union{Function, Type}, h::Dict{K,V}, key0) where {K, V} in Base at dict.jl:436
getindex(h::Dict{K,V}, key) where {K, V} in Base at dict.jl:473
getkey(h::Dict{K,V}, key, default) where {K, V} in Base at dict.jl:527
haskey(h::Dict, key) in Base at dict.jl:505
isempty(t::Dict) in Base at dict.jl:581
launch(manager::Base.Distributed.SSHManager, params::Dict, launched::Array, launch_ntfy::Condition) in Base.Distributed at distributed/managers.jl:121
launch(manager::Base.Distributed.LocalManager, params::Dict, launched::Array, c::Condition) in Base.Distributed at distributed/managers.jl:317
length(t::Dict) in Base at dict.jl:582
next(t::Dict{K,V}, i) where {K, V} in Base at dict.jl:579
pop!(h::Dict, key) in Base at dict.jl:538
pop!(h::Dict, key, default) in Base at dict.jl:543
rand(r::AbstractRNG, t::Dict) in Base.Random at random.jl:374
rand(t::Dict) in Base.Random at random.jl:381
serialize(s::AbstractSerializer, d::Dict) in Base.Serializer at serialize.jl:337
setindex!(h::Dict{K,V}, v0, key::K) where {K, V} in Base at dict.jl:420
setindex!(h::Dict{K,V}, v0, key0) where {K, V} in Base at dict.jl:412
similar(d::Dict{K,V}) where {K, V} in Base at dict.jl:192
similar(d::Dict, ::Type{Pair{K,V}}) where {K, V} in Base at dict.jl:193
sizehint!(d::Dict, newsz) in Base at dict.jl:274
start(t::Dict) in Base at dict.jl:574
```
In this case, `keys()` function isn’t returned. As it turns out, keys take the `Associative` type as its argument rather than Dict. It’s object-oriented, stupid! 😁
```julia
help?> keys
search: keys keytype KeyError haskey getkey WeakKeyDict takebuf_array
keys(a::Associative)
Return an iterator over all keys in a collection. collect(keys(a)) returns an array of keys. Since the keys are stored
internally in a hash table, the order in which they are returned may vary. But keys(a) and values(a) both iterate a and return
the elements in the same order.
julia> a = Dict('a'=>2, 'b'=>3)
Dict{Char,Int64} with 2 entries:
'b' => 3
'a' => 2
julia> collect(keys(a))
2-element Array{Char,1}:
'b'
'a'
```
I think it would be best if `methodswith` can return all functions that satisfy the contract. It’s a great utility!
---
### Author:  [@vchuravy](https://discourse.julialang.org/u/vchuravy)
#### Post date: [December 27, 2017, 6:02pm UTC](https://discourse.julialang.org/t/can-methodswith-return-everything/8026/2 "2017-12-27T18:02:39Z")
I think you are looking for `methodswith(Dict, true)` which will show all methods that are defined including for the supertypes of `T` (except `Any`).
(Also see the documentation for `methodswith`)
---
### Author:  [@tk3369](https://discourse.julialang.org/u/tk3369)
#### Post date: [December 27, 2017, 6:11pm UTC](https://discourse.julialang.org/t/can-methodswith-return-everything/8026/3 "2017-12-27T18:11:13Z")
Haha… Always learning something new 🙂
Thanks, @vchuravy