# `Soundcheck.Check.Warning.StreamConsumedOutsideFor`
[🔗](https://github.com/leonqadirie/soundcheck/blob/v0.1.0/lib/soundcheck/check/warning/stream_consumed_outside_for.ex#L1)

## Basics

> #### This check is disabled by default. {: .neutral}
>
> [Learn how to enable it](`e:credo:config_file.html#checks`) via `.credo.exs`.

This check has a base priority of `high` and works with any version of Elixir.

## Explanation

Flags `@streams.name` passed straight to an enumerating function
(`Enum`, `List`, `Stream`, `Map`, `MapSet`, `Keyword`, `length/1`,
`hd/1`, `tl/1`). LiveView raises at render time, because a stream is
not a list: its items are not kept on the server.

Before:

    <p>{length(@streams.posts)} posts</p>

After: keep a separate count assign.

    <p>{@post_count} posts</p>

Allowed: `:for={{id, item} <- @streams.name}`,
`<%= for {id, item} <- @streams.name do %>`, and passing the stream to
a component attribute (`<.table rows={@streams.posts}>`), which
iterates it.

Confidence: high. Tier: syntactic (works without compiling).

## Check-Specific Parameters

Use the following parameters to configure this check:

### `:excluded_paths`

  Paths to skip (atoms, binaries as path segments, or regexes).

*This parameter defaults to* `[~r/\/test\//, "test"]`.

### `:strict`

  Unused.

*This parameter defaults to* `false`.

## General Parameters

Like with all checks, [general params](`e:credo:check_params.html`) can be applied.

Parameters can be configured via the [`.credo.exs` config file](`e:credo:config_file.html`).

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*Consult [api-reference.md](api-reference.md) for complete listing*