Ruby 递归/嵌套收益率
我有以下两种方法可以使用Nokogiri编辑深度嵌套的XML结构。我想在深入研究结构时删除一些样板文件,所以我想重构这些方法 以下是方法Ruby 递归/嵌套收益率,ruby,recursion,nokogiri,yield,Ruby,Recursion,Nokogiri,Yield,我有以下两种方法可以使用Nokogiri编辑深度嵌套的XML结构。我想在深入研究结构时删除一些样板文件,所以我想重构这些方法 以下是方法 def create_acl(acl_name, addresses) connection.rpc.edit_config do |x| # `x` is a `Nokogiri::XML::Builder` object. x.configuration do x.firewall do x.family d
def create_acl(acl_name, addresses)
connection.rpc.edit_config do |x|
# `x` is a `Nokogiri::XML::Builder` object.
x.configuration do
x.firewall do
x.family do
x.inet do
x.filter do
x.name(acl_name)
add_acl_whitelist(x, addresses)
add_acl_blacklist(x)
end
end
end
end
end
end
end
def link_options
connection.rpc.edit_config do |x|
# `x` is a `Nokogiri::XML::Builder` object.
x.configuration do
x.interfaces do
x.interface do
x.name(interface['interface'])
x.send(:'ether-options') do
x.send(:'802.3ad') do
additional.each_pair { |attr, value| x.send(attr) { x.send(value) } }
end
end
end
end
end
end
end
我想我想把它们重构成这样的东西:
def create_acl(acl_name, addresses)
edit_config(:firewall, :family, :inet, :filter) do |x|
x.name(acl_name)
add_acl_whitelist(x, addresses)
add_acl_blacklist(x)
end
end
def link_options
edit_config(:interfaces, :interface) do |x|
x.name(interface['interface'])
x.send(:'ether-options') do
x.send(:'802.3ad') do
additional.each_pair { |attr, value| x.send(attr) { x.send(value) } }
end
end
end
end
def edit_config(*parents, &block)
connection.rpc.edit_config do |x|
# Recursively yield each item in `parents` to x, then yield the given
# block...
#
# Something like this, only with yielding?
#
# parents = parents.unshift(:configuration)
# parents.each { |method| x.send(method, &block) }
end
end
关于如何嵌套可以传递到该方法中的可变数量的收益率,有什么想法吗?如果不是的话,关于如何用这些方法重构样板文件还有其他想法吗
提前谢谢 查看此样式是否有帮助:
puts "Usual nested way : "
3.times do |x|
x.times do
x.times do
puts x
end
end
end
# =>
# 1
# 2
# 2
# 2
# 2
puts "Using recursion : "
def compact_nested_blocks(*funcs, &leaf_block)
3.times do |x| # Place the call to your parent block (connection.rpc ...).
sub_block(x, *funcs, &leaf_block)
end
end
def sub_block(obj, *funcs, &leaf_block)
obj.send(funcs.shift) do
funcs.empty?? yield(obj) : sub_block(obj, *funcs, &leaf_block)
end
end
# Call it with your methods instead of 'times'.
compact_nested_blocks(:times, :times) do |x|
puts x
end
# =>
# 1
# 2
# 2
# 2
# 2
我无法在本地用你的代码测试它。更换所需的核心线路,看看是否足够