attributes v0.4.0

Attributes.update

You're seeing just the function update, go back to Attributes module for more information.
Link to this function

update(module, path, lambda)

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Updates attribute in path.

Available at compile time only.

Example 

Attributes.update(MyModule, [:path], & &1 + 1)
Link to this function

update(module, path, default, lambda)

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Updates attribute in path with default lambda input value.

Available at compile time only.

Example 

Attributes.update(MyModule, [:path], 41, & &1 + 1)