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How to get a complete list of object's methods and attributes?
...en to go for its __bases__:
# code borrowed from the rlcompleter module
# tested under Python 2.6 ( sys.version = '2.6.5 (r265:79063, Apr 16 2010, 13:09:56) \n[GCC 4.4.3]' )
# or: from rlcompleter import get_class_members
def get_class_members(klass):
ret = dir(klass)
if hasattr(klass,'__b...
What does the * * CSS selector do?
...
Thanks Joe, tested it here and also according to comments above: the * * selector is equivalent to html * for all browsers except the old good IE6 :-)
– Stano
Jun 17 '13 at 16:57
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Is it possible to figure out the parameter type and return type of a lambda?
...e element of a tuple
// composed of those arguments.
};
};
// test code below:
int main()
{
auto lambda = [](int i) { return long(i*10); };
typedef function_traits<decltype(lambda)> traits;
static_assert(std::is_same<long, traits::result_type>::value, "err");
...
How do I provide custom cast support for my class?
...t from that example, using the explicit method, if you do:
string name = "Test";
Role role = (Role) name;
Then everything is fine; however, if you use:
object name = "Test";
Role role = (Role) name;
You will now get an InvalidCastException because string cannot be cast to Role, why, the compil...
How to break out of a loop in Bash?
...l done is given a non-zero value.
There are many ways you could set and test the value of done in order to exit the loop; the one I show above should work in any POSIX-compatible shell.
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Difference between OperationCanceledException and TaskCanceledException?
...enumerable.ForEachAsync( async () => { throw new ApplicationException( "Test" ); } ); somehow it is 'changed' to a TaskCanceledException. Any idea how that might be? This is problem for me as I want to catch a 'true' OperationCanceledException via catch ( OperationCanceledException ) but I don'...
What is the difference between NaN and None?
...nswer the second question:
You should be using pd.isnull and pd.notnull to test for missing data (NaN).
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Python : List of dict, if exists increment a dict value, if not append a new dict
...urls)
If you really need to do it the way you showed, the easiest and fastest way would be to use any one of these three examples, and then build the one you need.
from collections import defaultdict # available in Python 2.5 and newer
urls_d = defaultdict(int)
for url in list_of_urls:
urls...
Xcode - But… Where are our archives?
... That's what I did, nothing but the last one I've generated for test purpose.
– Oliver
Sep 11 '11 at 9:27
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How to get key names from JSON using jq
curl http://testhost.test.com:8080/application/app/version | jq '.version' | jq '.[]'
7 Answers
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