class A
def a_method
#..
end
end
class B < A
def method_1
# ...
a_method
end
def method_2
# ...
a_method
end
# ...
def method_n
# ...
a_method
end
end
a_method偶尔会抛出一个AException.
我想从那个例外中解救,比如：
class B < A
def method_1
# ...
a_method
rescue AException => e
p e.message
end
# ...
end
我想在B类(method_1,method_2,…,method_n)中的每个方法中以相同的方式进行挽救.我坚持找出一个漂亮而干净的解决方案,不需要复制救援代码块.你能帮帮我吗？
解决方法
如何使用块：
class B < A
def method_1
# some code here which do not raised an exception
with_rescue do
# method which raised exception
a_method
end
end
def method_2
with_rescue do
# ...
a_method
end
end
private
def with_rescue
yield
rescue => e
...
end
end