大约有 15,000 项符合查询结果（耗时：0.0291秒） [XML]
Check that an email address is valid on iOS [duplicate]
... @"^[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}$";
NSString *laxString = @"^.+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2}[A-Za-z]*$";
NSString *emailRegex = stricterFilter ? stricterFilterString : laxString;
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailReg...
Convert tuple to list and back
...nswered May 6 '14 at 14:27
KhonixKhonix
3,32311 gold badge1111 silver badges1515 bronze badges
...
Multiple glibc libraries on a single host
... (200+ shared libraries) which all must match. One of the pieces is ld-linux.so.2, and it must match libc.so.6, or you'll see the errors you are seeing.
The absolute path to ld-linux.so.2 is hard-coded into the executable at link time, and can not be easily changed after the link is done.
To build...
Initializing a list to a known number of elements in Python [duplicate]
Right now I am using a list, and was expecting something like:
9 Answers
9
...
Python strftime - date without leading 0?
...yphen between the % and the letter, you can remove the leading zero.
For example %Y/%-m/%-d.
This only works on Unix (Linux, OS X), not Windows (including Cygwin). On Windows, you would use #, e.g. %Y/%#m/%#d.
share
...
“for” vs “each” in Ruby
...
This is the only difference:
each:
irb> [1,2,3].each { |x| }
=> [1, 2, 3]
irb> x
NameError: undefined local variable or method `x' for main:Object
from (irb):2
from :0
for:
irb> for x in [1,2,3]; end
=> [1, 2, 3]
irb> x
=> 3
With the for loop, ...
ValueError: math domain error
I was just testing an example from Numerical Methods in Engineering with Python .
4 Answers
...
Real world example about how to use property feature in python?
...ed in how to use @property in Python. I've read the python docs and the example there, in my opinion, is just a toy code:
...
How to create file execute mode permissions in Git on Windows?
I use Git in Windows, and want to push the executable shell script into git repo by one commit.
5 Answers
...
Generating matplotlib graphs without a running X server [duplicate]
...b seems to require the $DISPLAY environment variable which means a running X server. Some web hosting services do not allow a running X server session. Is there a way to generate graphs using matplotlib without a running X server?
...