Fix warnings about unused block arguments (fix #181)

lib/dry/monads/maybe.rb

@@ -261,7 +261,7 @@ def deconstruct = EMPTY_ARRAY
         # @see Maybe::Some#filter
         #
         # @return [Maybe::None]
-        def filter(_ = Undefined) = self
+        def filter(_ = Undefined, &) = self
       end
 
       # A module that can be included for easier access to Maybe monads.

lib/dry/monads/result.rb

@@ -126,7 +126,7 @@ def flip
         # Ignores values and returns self, see {Failure#alt_map}
         #
         # @return [Result::Success]
-        def alt_map(_ = nil) = self
+        def alt_map(_ = nil, &) = self
       end
 
       # Represents a value of a failed operation.
@@ -371,7 +371,7 @@ class Some < Maybe
         # @param fail [#call] Fallback value
         # @param block [Proc] Fallback block
         # @return [Success<Any>]
-        def to_result(_fail = Unit) = Result::Success.new(@value)
+        def to_result(_fail = Unit, &) = Result::Success.new(@value)
       end
 
       class None < Maybe

lib/dry/monads/right_biased.rb

@@ -94,7 +94,7 @@ def or_fmap(...) = self
         # Returns value. It exists to keep the interface identical to that of RightBiased::Left
         #
         # @return [Object]
-        def value_or(_val = nil) = @value
+        def value_or(_val = nil, &) = @value
 
         # Applies the stored value to the given argument if the argument has type of Right,
         # otherwise returns the argument.
@@ -316,7 +316,7 @@ def flatten = self
         # identical to that of {RightBiased::Right}.
         #
         # @return [RightBiased::Left]
-        def and(_) = self
+        def and(_, &) = self
 
         # Pattern matching
         #

lib/dry/monads/try.rb

@@ -162,7 +162,7 @@ def to_s
         # @param errors [Class] List of Exception subclasses
         #
         # @return [Try::Value]
-        def recover(*_errors) = self
+        def recover(*_errors, &) = self
       end
 
       # Represents a result of a failed execution.

lib/dry/monads/validated.rb

@@ -103,12 +103,12 @@ def fmap(proc = Undefined, &block)
         # Ignores values and returns self, see {Invalid#alt_map}
         #
         # @return [Validated::Valid]
-        def alt_map(_ = nil) = self
+        def alt_map(_ = nil, &) = self
 
         # Ignores arguments, returns self
         #
         # @return [Validated::Valid]
-        def or(_ = nil) = self
+        def or(_ = nil, &) = self
 
         # @return [String]
         def inspect
@@ -185,7 +185,7 @@ def alt_map(proc = Undefined, &block)
         # Ignores the passed argument and returns self
         #
         # @return [Validated::Invalid]
-        def fmap(_ = nil) = self
+        def fmap(_ = nil, &) = self
 
         # Yields the given callable and returns the result
         #