大约有 45,000 项符合查询结果（耗时：0.0272秒） [XML]
Convert decimal to binary in python [duplicate]
....5.2 TypeError: non-empty format string passed to object.__format__ ahh - now i got it, what you meant: ```>>> "{0:b}".format(47) ---> '101111'
– Josef Klotzner
Oct 10 '19 at 18:58
...
Java “lambda expressions not supported at this language level”
... to 1.8 from 1.7 or lower. Do not change anything else. -> Click Apply
now gradle will re-sync and your error will be removed.
share
|
improve this answer
|
follow
...
Why is Python 3.x's super() magic?
...decorator_returning_new_class
class Foo(Bar):
def baz(self):
# Now `Foo` is a *different class*
return super(Foo, self).baz() + 42
The magic super() __class__ cell sidesteps these issues nicely by giving you access to the original class object.
The PEP was kicked off by Guido,...
Why should eval be avoided in Bash, and what should I use instead?
...g.'
# Result in the same output (as long as $IFS has not been modified).
Now say we want to add an option to redirect output as an argument to println. We could, of course, just redirect the output of println on each call, but for the sake of example, we're not going to do that. We'll need to us...
Deprecated: mysql_connect()
...It keeps the program going, and mysql_xxxx functions mean no problem right now since they work well in the current version. All you're telling about it being deprecated is PART OF THE ERROR MESSAGE so it's not a wise thing to repeat. Everyone can see it's deprecated, yes, thank you, next please. ...
How to serve static files in Flask
...rrassing. I've got an application that I threw together in Flask and for now it is just serving up a single static HTML page with some links to CSS and JS. And I can't find where in the documentation Flask describes returning static files. Yes, I could use render_template but I know the data i...
Invert “if” statement to reduce nesting
...
Now, how do we take that pretty code jop wrote and keep visual studio from breaking it up and putting the returns on separate lines? It really irks me that it reformats code that way. Makes this very readable code UGLY.
...
In a Django form, how do I make a field readonly (or disabled) so that it cannot be edited?
... return ['url']
else:
return []
And it works fine. Now if you add an Item, the url field is read-write, but on change it becomes read-only.
share
|
improve this answer
...
Specifically, what's dangerous about casting the result of malloc?
Now before people start marking this a dup, I've read all the following, none of which provide the answer I'm looking for:
...
How do I access the request object or any other variable in a form's clean() method?
...
UPDATED 10/25/2011: I'm now using this with a dynamically created class instead of method, as Django 1.3 displays some weirdness otherwise.
class MyModelAdmin(admin.ModelAdmin):
form = MyCustomForm
def get_form(self, request, obj=None, **kw...