大约有 12,000 项符合查询结果（耗时：0.0406秒） [XML]
Is there a recommended format for multi-line imports?
...nthesis notation is the ability to import multiple modules like this: from foo import (bar, baz). PEP 328 says nothing about formatting.
– Max Malysh
Aug 2 '18 at 12:20
...
sqlalchemy flush() and get inserted id?
...s):
session.refresh()
So, your code would look something like this:
f = Foo(bar=x)
session.add(f)
session.flush()
# At this point, the object f has been pushed to the DB,
# and has been automatically assigned a unique primary key id
f.id
# is None
session.refresh(f)
# refresh updates given obj...
Capturing Groups From a Grep RegEx
...
yeah, very help, e.g. echo 'r123456 foo 2016-03-17' | pcregrep -o1 'r([0-9]+)' 123456
– zhuguowei
Mar 17 '16 at 13:18
5
...
Finding the path of the program that will execute from the command line in Windows
.../en-us/sysinternals/bb896656). From the command-line, just run listdlls -d foo.dll to see all processes that have the module loaded and the full path to the loaded module. Alternatively, you can just do a Windows file search for the file name.
– Chris Schmich
N...
Why is there no multiple inheritance in Java, but implementing multiple interfaces is allowed?
...
@ChrisMiddleton: A method void UseCar(Car &foo); cannot be expected to include disambiguation between ToyotaCar::Drive and HybridCar::Drive (since it should often neither know nor care that those other types even exist). A language could, as C++ does, require that co...
What exactly do “u” and “r” string flags do, and what are raw string literals?
...
Note that ru"C:\foo\unstable" will fail because \u is a unicode escape sequence in ru mode. r mode does not have \u.
– Curtis Yallop
Jun 9 '14 at 16:08
...
Is the practice of returning a C++ reference variable evil?
...t, eg, operator<<: that must return a reference, or
cout << "foo" << "bar" << "bletch" << endl ;
won't work.
share
|
improve this answer
|
f...
django: BooleanField, how to set the default value to true?
...
from django.db import models
class Foo(models.Model):
any_field = models.BooleanField(default=True)
share
|
improve this answer
|
...
Where should signal handlers live in a django project?
...
In my case I want to listen to a signal of model Foo which is part of fooapp. But the signal receiver is an extension and does live in an different app (for example otherapp).
– guettli
May 6 '14 at 8:02
...
How does Task become an int?
... @JonSkeet But it doesn't make sense without the await - with T foo = someTaskT; you'd get "Cannot implicitly convert type Task<T> to T" - in the same way I argue that it would make more sense to have a keyword for the inverse (wrapping in Task<T>). I'm all for removing fluff ...