Latest #dialyzer Threads 
With this code under OTP 27 dialyzer ran cleanly:
defmodule Test do
@base_uribase_uri URI.new!(“`https://google.ca`”)
def our_base ...
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As the title says: is it possible to verify that a parameter to a macro is a typespec? As I understand it, a macro receives the ASTs as p...
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Can anyone explain this error to me?
From my POV, SightxrApi.Job.ParseDocumentsWorkflow.Options is right there :).
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Hi folks,
I want to create a function spec which tells the compiler that the return type will be conforming to a given Behavior. This qu...
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Background
I am trying to write some code to exemplify the power of behaviours in Elixir.
As a result, I am trying to implement this dia...
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I’m working with a team that are running (relatively) old versions of Elixir and Erlang. Last month I added dialyzer, via dialyxir (can n...
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Hi, a user found an issue when attempting to use my Ultraviolet library: Unexpected Dialyzer issue · Issue #1 · dcrck/ultraviolet · GitHu...
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Hello!
I use elixir with asdf and mix dialyzer emits errors like that:
deps/plug/lib/plug/router.ex:1:callback_info_missing
Callback in...
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Let’s image that I have a behaviour:
defmodule Bylins.Parser.API do
@behaviour __MODULE__
@callback get_page(integer()) :: {:ok, St...
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I’m still relatively new to Elixir, so I’m hoping someone can shed some light on what’s up with my mode and/or dialyzer:
defmodule Eclip...
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With this code under OTP 27 dialyzer ran cleanly:
defmodule Test do
@base_uribase_uri URI.new!(“`https://google.ca`”)
def our_base ...
New
Last Three Year's Trending
This dialyzer warning just happened randomly once I apply defmacro in my module.
I got 2 modules, the issues only appear in StoreFront m...
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TypeCheck: Fast and flexible runtime type-checking for your Elixir projects.
Core ideas
Type- and function specifications are const...
New
I’m getting a few things from my dialyzer output that I’m not sure how I can fix.
:0:unknown_function
Function ExUnit.Assertions.flunk/1...
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I was hoping I could get something like this working:
defmodule FooRegistry do
@foos [
FirstFoo,
SecondFoo,
ThirdFoo
]...
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Dialyzer is a tool that you’ve probably heard about in the Elixir community. You may have even used it. However, adding Dialyzer to an ex...
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I’ve been adding and refining specs on my (12 KLOC Elixir) project. This is an iterative process, so I run Dialyzer a lot. Even after the...
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After reading Dialyzer: suppress warning on a specific function, I think I know what I need but I don’t know where to put it.
I get a wa...
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I have a function where I do:
def recomputeCapacity(%MapSet{} = mCallIds) do
cu =
mCallIds
|> MapSet.to_list()
And D...
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I have a Mix task that extracts the version number of the project (for use in a build pipeline):
defmodule Mix.Tasks.VersionNumber do
...
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:wave:t3:
I want to understand the reason of constructing an improper list usage in the elixir-plug repository, Line 256
First Questio...
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I’m working with a team that are running (relatively) old versions of Elixir and Erlang. Last month I added dialyzer, via dialyxir (can n...
New
Im getting this error from dialyzer “The pattern can never match the type.”
Here’s some sample code
@spec check_rating_to_play(any(),...
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I’m trying to write a @spec for this function that was made by mix phx.gen.auth:
# lib/my_app/identity/user_token.ex
@spec build_sessio...
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The function call will not succeed.
ExInsights.track_exception(
_ :: %{:__exception__ => true, :__struct__ => atom(), atom() =&g...
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I am currently facing challenges with the Dialyzer tool while working on two Elixir libraries:
AnyHttp Library: This library offers a ...
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Trending Over Three Years
The Elixir Typespec docs show the following syntax for keyword lists in typespecs:
# ...
| [key: type] # keyword lis...
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In the Dialyzer docs ( http://erlang.org/doc/man/dialyzer.html#requesting-or-suppressing-warnings-in-source-files ), there is a way to tu...
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I’ll be honest, there is a lot about dialyzer output that confuses me.
Right now I’m confused by “The call … will never return since it ...
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If we have function with typespec that always returns value with incorrect type
@spec hello(integer()) :: map()
def hello(int) do
...
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I'm trying to fix all dialyzer warnings in quantum for the next big release. There are two errors which I'm not able to solve.
The erro...
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Background
I am trying dialyxir to find out if it is worth it, however I have a bunch of errors on the compile phase and I want to fix th...
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Hi
When I use @behaviour and @callback, the functions are defined. I guess that I do not need to use @spec for the implementation of the...
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I’ve gotten my (10 KLOC) project down to a single Dialyzer error, but I can’t figure this one out. Suggestions?
See this gist for the code.
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Today I released a new dialyzer Mix task as the dialyzex package! At the time we started writing this task, the existing dialyzer integra...
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Do you use Dialyzer/Dialyxir in your Elixir projects?
poll
If you only use it in some of them, which ones?
If you don’t use it, why not...
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I use ElixirLS extension in vscode on Ubuntu 18.04. For now, Go To Definition by ElixirLS works well on non-dependency modules. I was won...
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NOTE all these questions are related to my use of dialyxir.
Type variables
From the erlang documentation.
Type variables can be used i...
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I’m confused… when grooming the docs for https://elixir-lang.org/getting-started/typespecs-and-behaviours.html I got the feedback that mu...
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I have added a type definition for a struct (an Ecto schema actually) with @opaque like this:
@opaque t() :: %__MODULE__{}
I did this s...
New
Background
In a post I made about having static types in Elixir, someone mentioned the tool Gradualizer. This came as a surprise to me, a...
New
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