大约有 32,294 项符合查询结果（耗时：0.0631秒） [XML]
How to preventDefault on anchor tags?
...ar gives you access to the event object with $event, so you can do exactly what you would do in plain js or jquery click events. See this answer stackoverflow.com/a/19240232/1826354 and my comment on it
– Charlie Martin
Feb 13 '14 at 19:14
...
Change string color with NSAttributedString?
...ly thought that the solution required using NSAttributedString. So that is what they asked for. The real question should have been "How to set the label's color based on its value". I pointed out that the solution does not require NSAttributedString and showed a much simpler answer. And the OP agree...
Strings as Primary Keys in SQL Database [closed]
... Fair enough. I would agree though that if a string makes sense, that is what you should use. I would also say there are definitely times for GUID or UUID fields in databases where an autoincrement field would not work.
– Ryan Guill
Feb 5 '09 at 20:16
...
Find XOR of all numbers in a given range
... these properties important? Well, a simple route is to expand it out into what it really is, and then you can see these properties at work.
First, let's define what we want and call it n:
n = (a ^ a+1 ^ a+2 .. ^ b)
If it helps, think of XOR (^) as if it was an add.
Let's also define the f...
How to query as GROUP BY in django?
... i have a question, this query is only returning designation and dcount, what if i want to get other values of the table too?
– A.J.
Mar 5 '14 at 8:02
20
...
FileSystemWatcher Changed event is raised twice
...
It's been a couple months but I think what I ended up doing is having the event call a method that puts business logic inside of a lock statement. That way if I get extra events they queue up until it's their turn and there's nothing for them to do since the prev...
A clean, lightweight alternative to Python's twisted? [closed]
...m doing web stuff I work with lightweight WSGI code and plug together only what i need. Horses for courses I guess.
– jkp
Dec 1 '09 at 9:35
7
...
Unable to read data from the transport connection : An existing connection was forcibly closed by th
...nce the service was not available on that machine, the machine didn't know what to do with the request.
If the connection to the machine was not available, you'd see a different error. I forget what it is, but it's along the lines of "Service Unreachable" or "Unavailable".
Edit - added
It IS po...
Rails Observer Alternatives for 4.0
With Observers officially removed from Rails 4.0 , I'm curious what other developers are using in their place. (Other than using the extracted gem.) While Observers were certainly abused and could easily become unwieldily at times, there were many use-cases outside of just cache-clearing where they...
using gitignore to ignore (but not delete) files
... changes to that also show up in git status after .gitignore ing them. What should I do?
5 Answers
...