大约有 40,700 项符合查询结果（耗时：0.0447秒） [XML]
What is the difference between 'git pull' and 'git fetch'?
...update your remote-tracking branches under refs/remotes/<remote>/.
This operation never changes any of your own local branches under refs/heads, and is safe to do without changing your working copy. I have even heard of people running git fetch periodically in a cron job in the background (alt...
Representing null in JSON
What is the preferred method for returning null values in JSON? Is there a different preference for primitives?
7 Answers
...
What does character set and collation mean exactly?
...
From MySQL docs:
A character set is a set of symbols
and encodings. A collation is a set of
rules for comparing characters in a
character set. Let's make the
distinction clear with an example of
an imaginary character set.
Suppose that we have...
Understanding garbage collection in .NET
... run the Debug build. That requires explaining how the garbage collector discovers local variables and how that's affected by having a debugger present.
First off, the jitter performs two important duties when it compiles the IL for a method into machine code. The first one is very visible in the...
When should Flask.g be used?
...d to set flags per-request without change to code.
The application context is popped after teardown_request is called. (Armin's presentation explains this is because things like creating DB connections are tasks which setup the environment for the request, and should not be handled inside before_req...
Xamarin 2.0 vs Appcelerator Titanium vs PhoneGap [duplicate]
After all IDE evolutions (all platforms on topic are changed) of this year, i'm looking to understand what is the state of technology for those platforms.
...
What are the differences between the different saving methods in Hibernate?
...atabase. What are the differences between them, when to use which, and why isn't there just one intelligent method that knows when to use what?
...
What is the difference between include and require in Ruby?
My question is similar to " What is the difference between include and extend in Ruby? ".
11 Answers
...
Is Meyers' implementation of the Singleton pattern thread safe?
Is the following implementation, using lazy initialization, of Singleton (Meyers' Singleton) thread safe?
6 Answers
...
Is there a difference between authentication and authorization?
...
There is indeed a fundamental difference. Authentication is the mechanism whereby systems may securely identify their users. Authentication systems seek to provide answers to the questions:
Who is the user?
Is the user really who...