大约有 45,000 项符合查询结果（耗时：0.0504秒） [XML]
What does the question mark operator mean in Ruby?
...
It is a code style convention; it indicates that a method returns a boolean value.
The question mark is a valid character at the end of a method name.
...
Batch script: how to check for admin rights
...llyparanoid.com had a list of a few, so I ran each command on the two opposite extremes of current Windows OSs (XP and 8) in the hopes of finding a command that would be denied access on both OSs when run with standard permissions.
Eventually, I did find one - NET SESSION. A true, clean, universa...
Changing default encoding of Python?
I have many "can't encode" and "can't decode" problems with Python when I run my applications from the console. But in the Eclipse PyDev IDE, the default character encoding is set to UTF-8 , and I'm fine.
...
Tar a directory, but don't store full absolute paths in the archive
...
tar -cjf site1.tar.bz2 -C /var/www/site1 .
In the above example, tar will change to directory /var/www/site1 before doing its thing because the option -C /var/www/site1 was given.
From man tar:
OTHER OPTIONS
-C, --directory DIR
...
How do I delete multiple rows in Entity Framework (without foreach)
I'm deleting several items from a table using Entity Framework. There isn't a foreign key / parent object so I can't handle this with OnDeleteCascade.
...
Inspect element that only appear when other element is mouse overed/entered
...
It's fairly easy in Chrome 38.0.2094.0.
Here's what it'll look like:
Step-by-step:
Open the DevTools in the Sources panel
Make the tooltip appear by hovering over the button
Press F8 to freeze the page
Switch to the Elem...
Where is Python's sys.path initialized from?
Where is Python's sys.path initialized from?
2 Answers
2
...
Finding last occurrence of substring in string, replacing that
...format, and I want to find the last "." character in each one, and replace it with ". - ". I've tried using rfind, but I can't seem to utilize it properly to do this.
...
Detect if Android device has Internet connection
...o network available!");
}
return false;
}
Of course you can substitute the http://www.google.com URL for any other server you want to connect to, or a server you know has a good uptime.
As Tony Cho also pointed out in this comment below, make sure you don't run this code on the main threa...
preferredStatusBarStyle isn't called
I followed this thread to override -preferredStatusBarStyle , but it isn't called.
Are there any options that I can change to enable it? (I'm using XIBs in my project.)
...