What is a lambda expression, and when should I use one? What is a lambda expression in C++11? When would I use one? What class of problem do they solve that wasn't possible prior to their introduction? A few examples, and use cases would be useful
Is there a way to perform if in pythons lambda? [duplicate] An easy way to perform an if in lambda is by using list comprehension You can't raise an exception in lambda, but this is a way in Python 3 x to do something close to your example: