大约有 45,000 项符合查询结果（耗时：0.0526秒） [XML]
Explicitly calling return in a function or not
...l was originally asking (why explicit return is bad). And I would like to know right (the one right for anyone) answer as well :). Do you consider to provide your explanation for users of this site?
– Petr Matousu
Mar 30 '17 at 8:53
...
Capture keyboardinterrupt in Python without try-except
... except KeyboardInterrupt:
# do nothing here
pass
(Yes, I know that this doesn't directly answer the question, but it's not really clear why needing a try/except block is objectionable -- maybe this makes it less annoying to the OP)
...
Create a pointer to two-dimensional array
...0][0][1] = ...;
Because indexing requires the element type's size to be known (indexing implies an addition of an integer to the pointer, so it won't work with incomplete types). Note that this only works in C, because T[] and T[N] are compatible types. C++ does not have a concept of compatible ty...
Best practice for Python assert
...
assert should only be used to catch problems with no known recovery; almost always code bugs (not bad inputs). when an assert is triggered, it should mean that the program is in a state that may be dangerous to continue in, as it may start talking to the network or writing to d...
How can I dynamically create derived classes from a base class
...ter names.
The parameter verification in __init__ just does not allow
unknown parameters, if you need other verifications, like
type, or that they are mandatory, just add the logic
there:
class BaseClass(object):
def __init__(self, classtype):
self._type = classtype
def ClassFactory(...
django unit tests without a db
...to : from django.test.runner import DiscoverRunner The NoDbTestRunner must now extend the DiscoverRunner class.
– Aditya Satyavada
Mar 30 '18 at 6:44
...
Referring to the null object in Python
... message that mentions that NoneType can't do this or can't do that, just know that it's simply the one None that was being used in a way that it can't.
Also, None is a built-in constant. As soon as you start Python, it's available to use from everywhere, whether in module, class, or function. NoneT...
What is in your Mathematica tool bag? [closed]
We all know that Mathematica is great, but it also often lacks critical functionality. What kind of external packages / tools / resources do you use with Mathematica?
...
How do you detect/avoid Memory leaks in your (Unmanaged) code? [closed]
...
Valgrind also now works on OS X, so linux is not your only option.
– Michael Anderson
Oct 12 '10 at 3:01
1
...
How to find event listeners on a DOM node when debugging or from the JavaScript code?
...erts "function() { alert('clicked!') }"
})
1.7+ (very nice)
Made using knowledge from this comment.
events = $._data(this, 'events');
for (type in events) {
events[type].forEach(function (event) {
console.log(event['handler']);
});
}
When clicking the resulting output in the consol...