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Contents
class Array
#
# modifying the behaviour of scalar multiplication for +Array+s
# has the unintended side-effect of killing any +File.join()+ path which
# contains a +['..'] * n+ idiomatic figure.
#
# Better not tamper with it and use another name
#
SCALAR_OPERATIONS = [ :+, :-, ]
SCALAR_NEW_OPERATIONS = [ :smul, :/, :%, :**, ]
SCALAR_OPERATIONS.each do
|m|
orig_meth = "orig_#{m.to_s}".to_sym
alias_method orig_meth, m
define_method(m) { |sc| scalarop(m, sc) }
end
SCALAR_NEW_OPERATIONS.each do
|m|
define_method(m) { |sc| scalarop_new(m, sc) }
end
protected
def scalarop_new(op, other)
self.map { |el| el.send(op, other) }
end
def scalarop(op, other)
orig_meth = "orig_#{op.to_s}".to_sym
return self.send(orig_meth, other) unless other.kind_of?(Numeric)
scalarop_new(op, other)
end
end
#
# we add an +:smul+ method to scalars in order to seamlessly interoperate
# with the array version of +:smul+
#
class Numeric
def smul(other)
self * other
end
end
Version data entries
27 entries across 27 versions & 1 rubygems