大约有 20,401 项符合查询结果（耗时：0.0588秒） [XML]
Short description of the scoping rules?
What exactly are the Python scoping rules?
9 Answers
9
...
Diff Algorithm? [closed]
I've been looking like crazy for an explanation of a diff algorithm that works and is efficient.
5 Answers
...
Laravel Eloquent ORM Transactions
The Eloquent ORM is quite nice, though I'm wondering if there is an easy way to setup MySQL transactions using innoDB in the same fashion as PDO, or if I would have to extend the ORM to make this possible?
...
When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
Can someone tell me when and where I need to use begin and end blocks in SQL Server?
Also, what exactly does the Go keyword do?
...
How to count objects in PowerShell?
As I'm reading in the PowerShell user guide, one of the core PowerShell concepts is that commands accept and return objects instead of text. So for example, running get-alias returns me a number of System.Management.Automation.AliasInfo objects:
...
Get last element of Stream/List in a one-liner
How can I get the last element of a stream or list in the following code?
6 Answers
6
...
Fatal error: use of unimplemented initializer 'init(coder:)' for class
I decided to continue my remaining project with Swift. When I add the custom class (subclass of UIViewcontroller ) to my storyboard view controller and load the project, the app crashes suddenly with the following error:
...
How to test an Internet connection with bash?
How can an internet connection be tested without pinging some website?
I mean, what if there is a connection but the site is down? Is there a check for a connection with the world?
...
Setting the zoom level for a MKMapView
I have a map which shows correctly, the only thing I want to do now is set the zoom level when it loads. Is there a way to do this?
...
What is a handle in C++?
I have been told that a handle is sort of a pointer, but not, and that it allows you to keep a reference to an object, rather than the object itself. What is a more elaborate explanation?
...