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Python: most idiomatic way to convert None to empty string?
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If you actually want your function to behave like the str() built-in, but return an empty string when the argument is None, do this:
def xstr(s):
if s is None:
return ''
return str(s)
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How to change a django QueryDict to Python Dict?
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In Django 1.8 on Python 3 all I needed was dict(queryDict).
– fmalina
May 15 '15 at 19:16
1
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Error to run Android Studio
I have installed Android Studio and I followed all steps described here
17 Answers
17...
Using an RDBMS as event sourcing storage
...dger I build to illustrate.
https://github.com/andrewkkchan/client-ledger-service
The above is an event sourcing ledger web service.
https://github.com/andrewkkchan/client-ledger-core-db
And the above I use RDBMS to compute states so you can enjoy all the advantages coming with a RDBMS like transac...
C++11 reverse range-based for-loop
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Actually Boost does have such adaptor: boost::adaptors::reverse.
#include <list>
#include <iostream>
#include <boost/range/adaptor/reversed.hpp>
int main()
{
std::list<int> x { 2, 3, 5, 7, 11, 13, 1...
In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
...ld instances (at least,
not at the moment). If a base class has a field called author, you
cannot create another model field called author in any class that
inherits from that base class.
share
|
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Simple insecure two-way data “obfuscation”?
...e to figure out your keys by just assuming that you used this code as-is! All you have to do is change some of the numbers (must be <= 255) in the Key and Vector arrays (I left one invalid value in the Vector array to make sure you do this...). You can use https://www.random.org/bytes/ to gener...
Is there a way to @Autowire a bean that requires constructor arguments?
...uration
To be more clear: in your scenario, you'd wire two classes, MybeanService and MyConstructorClass, something like this:
@Component
public class MyBeanService implements BeanService{
@Autowired
public MybeanService(MyConstructorClass foo){
// do something with foo
}
}
@Co...
TypeScript static classes
...hat cannot be subclassed and must contain only static methods. C# does not allow one to define functions outside of classes. In TypeScript this is possible, however.
If you're looking for a way to put your functions/methods in a namespace (i.e. not global), you could consider using TypeScript's mod...
Chrome refuses to execute an AJAX script due to wrong MIME type
...t; Programs > Turn Windows features on or off > Internet Information Services > World Wide Web Services > Common HTTP Features > Static Content.
I faced this problem when trying to run an existing application on a new IIS 10.0 installation
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