b79a8a8 · elk · git.iko.soy

106

107{-| Keep only events that satisfy the given predicate. Elm does not allow

108undefined signals, so a base case must be provided in case the predicate is

109−never satisfied. -}

109+not satisfied initially. -}

110keepIf : (a -> Bool) -> a -> Signal a -> Signal a

111keepIf = Native.Signal.keepIf

112

113{-| Drop events that satisfy the given predicate. Elm does not allow undefined

114−signals, so a base case must be provided in case the predicate is never

114+signals, so a base case must be provided in case the predicate is satisfied

115−satisfied. -}

115+initially. -}

116dropIf : (a -> Bool) -> a -> Signal a -> Signal a

117dropIf = Native.Signal.dropIf

118

120becomes true, the most recent value of the second signal will be propagated.

121Until the first signal becomes false again, all events will be propagated. Elm

122does not allow undefined signals, so a base case must be provided in case the

123−first signal is never true. -}

123+first signal is not true initially. -}

124keepWhen : Signal Bool -> a -> Signal a -> Signal a

125keepWhen = Native.Signal.keepWhen

126

127{-| Drop events when the first signal is true. When the first signal becomes

128false, the most recent value of the second signal will be propagated. Until the

129first signal becomes true again, all events will be propagated. Elm does not

130−allow undefined signals, so a base case must be provided in case the first

130+allow undefined signals, s oa base case must be provided in case the first

131−signal is always true. -}

131+signal is true initially. -}

132dropWhen : Signal Bool -> a -> Signal a -> Signal a

133dropWhen = Native.Signal.dropWhen

134