大约有 44,000 项符合查询结果（耗时：0.0718秒） [XML]
How long should SQL email fields be? [duplicate]
...really long but do you really need worry about these long Email addresses? If someone can't login with a 100-char Email, do you really care? We actually prefer they can't.
Some statistical data may shed some light on the issue. We analyzed a database with over 10 million Email addresses. These addr...
How to fix “Attempted relative import in non-package” even with __init__.py
...e fact that you need __init__.pys all the way down, and the __package__-modifying trickery (described below by BrenBarn) needed to allow these imports for executable scripts (e.g. when using a shebang and doing ./my_script.py at the Unix shell) would all be useful. This whole issue was quite tricky ...
How to download all files (but not HTML) from a website using wget?
...
To filter for specific file extensions:
wget -A pdf,jpg -m -p -E -k -K -np http://site/path/
Or, if you prefer long option names:
wget --accept pdf,jpg --mirror --page-requisites --adjust-extension --convert-links --backup-converted --no-p...
Delete all Duplicate Rows except for One in MySQL? [duplicate]
...so included AND n1.id <> n2.id, it deleted every row in the table.
If you want to keep the row with the lowest id value:
DELETE n1 FROM names n1, names n2 WHERE n1.id > n2.id AND n1.name = n2.name
If you want to keep the row with the highest id value:
DELETE n1 FROM names n1, names n...
Real world example about how to use property feature in python?
...gth
@stride_length.setter
def stride_length(self, value):
if value > 10:
raise ValueError("This pedometer is based on the human stride - a stride length above 10m is not supported")
else:
self._stride_length = value
...
WAMP 403 Forbidden message on Windows 7
...The rule to allow 'from 127.0.0.1' should be enough to allow local access, if that is the main objective here, the 127.0.0.1 is basically a loop back to the network adaptor. If you type in the address bar 'http'://127.0.0.1:{portNumber}/{folderOrFileName}' it should work fine. This should work the s...
How to get a complete list of object's methods and attributes?
...rns the keys in the __dict__ attribute, i.e. all the attributes accessible if the __getattr__ method is not reimplemented.
For the second question, it does not really make sense. Actually, methods are callable attributes, nothing more. You could though filter callable attributes, and, using the ins...
Why java classes do not inherit annotations from implemented interfaces?
...notate the interface methods so Guice could select the right methods. Even if the annotation type is annotated with Inherited annotation implementing class doesn't inherit the annotation as stated in Inherited's java doc:
...
Is there a “do … while” loop in Ruby?
...d he suggests using Kernel#loop, e.g.
loop do
# some code here
break if <condition>
end
Here's an email exchange in 23 Nov 2005 where Matz states:
|> Don't use it please. I'm regretting this feature, and I'd like to
|> remove it in the future if it's possible.
|
|I'm surprised...
How do I use raw_input in Python 3
... a leftover from when Python was less security conscious. The change simplified the language. See also "import this" for a deeper explanation. Would you prefer a dead language to one that evolves? There are plenty of those around.
– meawoppl
Apr 9 '14 at ...