大约有 40,000 项符合查询结果（耗时：0.0559秒） [XML]
How to completely remove borders from HTML table
My goal is to make an HTML page that is similar to a "photo frame". In other words, I want to make a blank page that is surrounded by 4 pictures.
...
Convert python datetime to epoch with strftime
...
Python doesn't actually support %s as an argument to strftime (if you check at http://docs.python.org/library/datetime.html#strftime-and-strptime-behavior it's not in the list), the only reason it's working is because Python is passing the information to your system's strftime, which uses your loca...
Is there any difference between GROUP BY and DISTINCT
...ates an execution plan as if you'd simply used "Distinct."
However, I think it's important to note Hank's response as well - cavalier treatment of "Group By" and "Distinct" could lead to some pernicious gotchas down the line if you're not careful. It's not entirely correct to say that this is "not...
How to encode URL parameters?
I am trying to pass parameters to a URL which looks like this:
4 Answers
4
...
How to check Oracle database for long running queries
...
and s.username <> 'SYSTEM'
order by s.sid,t.piece
/
This shows locks. Sometimes things are going slow, but it's because it is blocked waiting for a lock:
select
object_name,
object_type,
session_id,
type, -- Type or system/user lock
lmode, -- lock mode in which...
How can I convert NSDictionary to NSData and vice versa?
...
NSDictionary -> NSData:
NSData *myData = [NSKeyedArchiver archivedDataWithRootObject:myDictionary];
NSData -> NSDictionary:
NSDictionary *myDictionary = (NSDictionary*) [NSKeyedUnarchiver unarchiveObjectWithData:myData];
...
SQL Server ':setvar' Error
...
The :setvar only works in SQL command mode, so you are possibly within normal SQL execution in the management studio and have not swapped to command mode.
This can be done through the user interface in SQL Server Management Studio by going to t...
Any way to properly pretty-print ordered dictionaries?
I like the pprint module in Python. I use it a lot for testing and debugging. I frequently use the width option to make sure the output fits nicely within my terminal window.
...
How do I turn on SQL debug logging for ActiveRecord in RSpec tests?
I have some RSpec tests for my models and I would like to turn on SQL ActiveRecord logging just like I see in the Rails server mode. How to do that?
...
Twitter Bootstrap Form File Element Upload Button
...tton. Is it even possible to finesse the upload button using CSS? (seems like a native browser element that can't be manipulated)
...