大约有 42,000 项符合查询结果(耗时:0.0557秒) [XML]
JavaScript Chart Library
...would recommend the later because it is well integrated with DOM, allowing to manipulate charts elements with the DOM, and most importantly setting DOM events. By contrast Canvas charting libraries must reinvent the DOM wheel to manage events. So unless you intend to build static graphs with no even...
Entity Framework: One Database, Multiple DbContexts. Is this a bad idea? [closed]
My impression to date has been that a DbContext is meant to represent your database, and thus, if your application uses one database, you'd want only one DbContext .
...
How to replace all occurrences of a character in string?
What is the effective way to replace all occurrences of a character with another character in std::string ?
15 Answers
...
Xcode stuck at “Your application is being uploaded”
I am facing an issue while submitting my app from Xcode to the App Store. I have done everything regarding my project, and its running fine on my iPhone and iPad. But when I submit my project I am facing a huge problem.
...
When should I use the new keyword in C++?
...
Method 1 (using new)
Allocates memory for the object on the free store (This is frequently the same thing as the heap)
Requires you to explicitly delete your object later. (If you don't delete it, you could create a memory leak)
Memory stays allocated until you delete it. (i.e. you could...
How to detect when facebook's FB.init is complete
... old JS SDK had a function called FB.ensureInit. The new SDK does not seem to have such function... how can I ensure that I do not make api calls until it is fully initiated?
...
Why should I not wrap every block in “try”-“catch”?
...the belief that if a method can throw an exception then it is reckless not to protect this call with a meaningful try block.
...
Use different Python version with virtualenv
...e the --python (or short -p) option when creating your virtualenv instance to specify the Python executable you want to use, e.g.:
virtualenv --python=/usr/bin/python2.6 <path/to/new/virtualenv/>
N.B. For Python 3.3 or later, refer to The Aelfinn's answer below.
...
What's a quick way to comment/uncomment lines in Vim?
...
I use the NERD Commenter script. It lets you easily comment, uncomment or toggle comments in your code.
As mentioned in the comments:
for anyone who is confused by the usage, default leader is "\" so 10\cc will comment ten lines and 10\cu will uncomment those ten lines
...
MongoDB relationships: embed or reference?
I'm new to MongoDB--coming from a relational database background. I want to design a question structure with some comments, but I don't know which relationship to use for comments: embed or reference ?
...
