fix Base.next() dropped in 1.0

Author: alyst

src/frequency_adaptation.jl

@@ -52,7 +52,7 @@ If the block is empty, it is repopulated.
 The methods are randomly shuffled each time the block is regenerated, since we need
 to know their effectiveness at every period of the optimization process.
 """
-function Base.next(fa::FrequencyAdapter)
+function next(fa::FrequencyAdapter)
     if fa.block_pos > length(fa.block)
         fill_block!(fa)
     end

src/genetic_operators/operators_mixture.jl

@@ -25,7 +25,16 @@ function apply!(opmix::GeneticOperatorsMixture,
     apply!(op, v, target_index)
 end
 
-function Base.next(opmix::FixedGeneticOperatorsMixture)
+"""
+    next(fa::FixedGeneticOperatorsMixture)
+
+Gets the random genetic operator from the mixture.
+
+The probability to select an operator is proportional to its weight.
+
+Returns a tuple of the genetic operator and its index in the mix.
+"""
+function next(opmix::FixedGeneticOperatorsMixture)
     i = sample(1:length(opmix.operators), opmix.weights)
     return opmix.operators[i], i
 end
@@ -47,7 +56,7 @@ end
 
 frequencies(opmix::FAGeneticOperatorsMixture) = frequencies(opmix.fa)
 
-function Base.next(opmix::FAGeneticOperatorsMixture)
+function next(opmix::FAGeneticOperatorsMixture)
     i = next(opmix.fa)
     return opmix.operators[i], i
 end