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Python multiprocessing PicklingError: Can't pickle
I am sorry that I can't reproduce the error with a simpler example, and my code is too complicated to post. If I run the program in IPython shell instead of the regular Python, things work out well.
...
Split a module across several files
...d the module. Add a mod math; in main.rs. If you don't do that, you get an error message from the compiler when importing like this:
error: unresolved import `math::Matrix`. Maybe a missing `extern crate math`?
The hint is misleading here. There's no need for additional crates, except of course y...
error: passing xxx as 'this' argument of xxx discards qualifiers
...he object is const; so any attempt to modify the const object should be an error. Hence compiler generates an error message.
The solution is simple: make the functions const as:
int getId() const {
return id;
}
string getName() const {
return name;
}
This is necessary because now you ca...
WordPress is giving me 404 page not found for all pages except the homepage
...
This somewhat helped me, I had some database errors and afterwards all my pages were 404. Switching the permalink option to another option (such as plain) then back to the default option fixed all my links!
– PaulBGD
Apr 15 '17 at ...
Creating a JSON response using Django and Python
...go.http import HttpResponse
response_data = {}
response_data['result'] = 'error'
response_data['message'] = 'Some error message'
Pre-Django 1.7 you'd return it like this:
return HttpResponse(json.dumps(response_data), content_type="application/json")
For Django 1.7+, use JsonResponse as shown ...
Trusting all certificates with okHttp
... This doesn't work for self-signed certs. Causes a 401 Unauthorized error.
– IgorGanapolsky
Jun 5 '18 at 14:55
5
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No Exception while type casting with a null in java
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“Too many values to unpack” Exception
...turnATupleWithThreeValues()
print a
print b
print c
But this raises your error
def returnATupleWithThreeValues():
return (1,2,3)
a,b = returnATupleWithThreeValues()
print a
print b
raises
Traceback (most recent call last):
File "c.py", line 3, in ?
a,b = returnATupleWithThreeValues()...
TypeScript with KnockoutJS
... your code and it helps you much with auto completion and perform type and error checking (much more than JavaScript). That is why we use definition files for code written in JavaScript so as to provide typescript type checking. Of course you could declare libs as "any", but this is not good.hope I ...
Why would anyone use set instead of unordered_set?
...r<int>> two(){
//unordered_set<vector<int>> s; // error vector<int> doesn't have hash function
unordered_set<vector<int>, VectorHash> s;
s.insert({1, 2});
s.insert({1, 3});
s.insert({1, 2});
for(const auto& vec:s)
cout<&...