大约有 42,000 项符合查询结果（耗时：0.0630秒） [XML]
What is the use of the ArraySegment class?
...
ArraySegment<T> has become a lot more useful in .NET 4.5+ and .NET Core as it now implements:
IList<T>
ICollection<T>
IEnumerable<T>
IEnumerable
IReadOnlyList<T>
IReadOnlyCollection<T>
as opposed to the .NET 4 version which implemented no interfaces...
Provide an image for WhatsApp link sharing
...
2020 standards
It takes a few steps to get the perfect preview for WhatsApp, Twitter, Facebook and bookmark icons for pc's and mobile devices. If you like reading go to ogp.me - but make sure to read steps 1 - 6 in this answer to ge...
What is std::promise?
I'm fairly familiar with C++11's std::thread , std::async and std::future components (e.g. see this answer ), which are straight-forward.
...
How do I perform the SQL Join equivalent in MongoDB?
...t array field>
}
}
Of course Mongo is not a relational database, and the devs are being careful to recommend specific use cases for $lookup, but at least as of 3.2 doing join is now possible with MongoDB.
share
...
“INSERT IGNORE” vs “INSERT … ON DUPLICATE KEY UPDATE”
...y.
Side effects are propagated to replicas too.
correction: both REPLACE and INSERT...ON DUPLICATE KEY UPDATE are non-standard, proprietary inventions specific to MySQL. ANSI SQL 2003 defines a MERGE statement that can solve the same need (and more), but MySQL does not support the MERGE statemen...
What are the most common SQL anti-patterns? [closed]
...d (or are learning) that SQL is different. Eliciting the desired results, and doing so efficiently, involves a tedious process partly characterized by learning unfamiliar paradigms, and finding out that some of our most familiar programming patterns don't work here. What are the common antipattern...
iPhone SDK: what is the difference between loadView and viewDidLoad?
When working with views and view controllers in an iPhone app, can anyone explain the difference between loadView and viewDidLoad?
...
Xcode : failed to get the task for process
This is for an existing app that compiled and distributed multiple times. Since updating to Xcode 5 I have this error popping.
...
Best practice for Python assert
...l this an example of using them. This is more an example of properties in and of themselves: docs.python.org/library/functions.html#property
– Jason Baker
Jun 3 '09 at 13:43
3
...
How to include view/partial specific styling in AngularJS
...s for your routes. If you want a more complete solution for managing on-demand stylesheets throughout your application, you may want to checkout Door3's AngularCSS project. It provides much more fine-grained functionality.
In case anyone in the future is interested, here's what I came up with:
1. ...