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HashSet versus Dictionary w.r.t searching time to find if an item exists
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I assume you mean Dictionary<TKey, TValue> in the second case? HashTable is a non-generic class.
You should choose the right collection for the job based on your actual requirements. Do you actually want to map each key to a value?...
Entity Framework vs LINQ to SQL
...rty answer is that
LINQ to SQL is the quick-and-easy way to do it. This means you will get going quicker, and deliver quicker if you are working on something smaller.
Entity Framework is the all-out, no-holds-barred way to do it. This means you will take more time up-front, develop slower, and h...
Why are you not able to declare a class as static in Java?
... to ask yourself what a "static class" would be. In java, a static element means that you can access/invoke it without an instance of the enclosing class; what that could possibly mean if you apply the keyword to the class itself? What are your intentions? What would you expect? Now that you have an...
搭建高可用mongodb集群（三）—— 深入副本集内部机制 - 大数据 & AI - 清...
...照一些属性来判断谁应该胜出。这个属性可以是一个静态ID，也可以是更新的度量像最近一次事务ID（最新的节点会胜出）。详情请参考NoSQL数据库分布式算法的协调者竞选还有维基百科的解释 。
选举 那mongodb是怎进行选举的呢...
Performant Entity Serialization: BSON vs MessagePack (vs JSON)
...s are required by MongoDB). These types are not compatible with JSON. That means some type information can be lost when you convert objects from BSON to JSON, but of course only when these special types are in the BSON source. It can be a disadvantage to use both JSON and BSON in single service.
Me...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...pt ? opt->optlen : 0));
return -EMSGSIZE;
}
/*
* transhdrlen > 0 means that this is the first fragment and we wish
* it won't be fragmented in the future.
*/
if (transhdrlen && // sizeof(struct udphdr)
length + fragheaderlen <= mtu &&
rt->dst.dev->features & (NETIF_F_HW...
Creating a new user and password with Ansible
...aybook or ansible command line has your password as-is in plain text, this means your password hash recorded in your shadow file is wrong. That means when you try to authenticate with your password its hash will never match.
Additionally, see Ansible FAQ regarding some nuances of password parameter...
FIND_IN_SET() vs IN()
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SELECT name
FROM orders,company
WHERE orderID = 1
AND companyID IN (attachedCompanyIDs)
attachedCompanyIDs is a scalar value which is cast into INT (type of companyID).
The cast only returns numbers up to the first non-digit (a comma in your case).
Thus,
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Why do we need a pure virtual destructor in C++?
...n that pure virtual destructors are allowed is that to prohibit them would mean adding another rule to the language and there's no need for this rule since no ill-effects can come from allowing a pure virtual destructor.
Nope, plain old virtual is enough.
If you create an object with default impl...
time.sleep — sleeps thread or process?
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Open a new question to ask the meaning of this answer? That seems quite weird to me. And I meant 11 (not 5), sorry can't correct my comment now. I actually need some help understanding what point this answer is trying to make.
– akki
...