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(this == null) in C#!
...in sematic checks) in the compiler: it should NOT be possible. You are not allowed to write : base(CheckNull()) if CheckNull is not static, and alike you should not be able to inline an instance-bound lambda.
– quetzalcoatl
Aug 14 '12 at 0:29
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Returning multiple values from a C++ function
...vations about the pair/tuple technique. Mainly, there is often no natural order to the return values. How is the reader of the code to know whether result.first is the quotient or the remainder? And the implementer could change the order, which would break existing code. This is especially insid...
How to check for an active Internet connection on iOS or macOS?
...nternet stuff
}
This method doesn't wait for changed network statuses in order to do stuff. It just tests the status when you ask it to.
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Is there a way for multiple processes to share a listening socket?
...POSIX type OS), using fork() will cause the forked child to have copies of all the parent's file descriptors. Any that it does not close will continue to be shared, and (for example with a TCP listening socket) can be used to accept() new sockets for clients. This is how many servers, including Apac...
Resetting generator object in Python
I have a generator object returned by multiple yield. Preparation to call this generator is rather time-consuming operation. That is why I want to reuse the generator several times.
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技术人员如何去面试？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...。
技术面试不同的技术应该问的问题都不相同，比如你PHP、Java、C++、数据库每个技术点不同，出的面试题自然不同，最好你在找工作的时候就选择跟你个人擅长技术比较符合的职位。
技术面试的流程是一面简单问题(基础知识...
View's SELECT contains a subquery in the FROM clause
...y client_id
create view view_credit_status as
select
credit_orders.client_id,
sum(credit_orders.number_of_credits) as purchased,
ifnull(t1.credits_used,0) as used
from credit_orders
left outer join view_clients_credit_usage as t1 on t1.client_id = credit_ord...
Python string.join(list) on object array rather than string array
...riments says that the list comprehension one can be a good 60% faster on small lists (experiment run 10^6 times on a list of three object()s). However, their performance is similar on big lists (2nd experiment run once on a 10^7 objects() list).
– gozzilli
Mar ...
Iterator Loop vs index loop [duplicate]
...urn
}
Advantages: more generic, works for all containers (even the new unordered associative containers, can also use different strides (e.g. std::advance(it, 2));
Disadvantages: need extra work to get the index of the current element (could be O(N) for list or forward_list). Again, the loop cont...
Difference in make_shared and normal shared_ptr in C++
...): This is not a problem since C++17, due to the changes in the evaluation order of function arguments. Specifically, each argument to a function is required to fully execute before evaluation of other arguments.
Since the OP seem to be wondering about the exception-safety side of things, I've upda...