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Does SQLAlchemy have an equivalent of Django's get_or_create?
...ortcut readily available AFAIK.
You could generalize it ofcourse:
def get_or_create(session, model, defaults=None, **kwargs):
instance = session.query(model).filter_by(**kwargs).first()
if instance:
return instance, False
else:
params = dict((k, v) for k, v in kwargs.it...
What characters are forbidden in Windows and Linux directory names?
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answered Apr 16 '15 at 13:32
AeonOfTimeAeonOfTime
75466 silver badges99 bronze badges
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How to specify an area name in an action link?
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edited Oct 31 '14 at 15:32
dav_i
24.3k1717 gold badges9292 silver badges127127 bronze badges
answered ...
Database sharding vs partitioning
...ty reasons, as for load balancing.
https://en.wikipedia.org/wiki/Partition_(database)
Sharding is a type of partitioning, such as Horizontal Partitioning (HP)
There is also Vertical Partitioning (VP) whereby you split a table into smaller distinct parts. Normalization also involves this splitting...
Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?
... my mind.
– n8gray
Jul 28 '14 at 18:32
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show 1 more comment
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throwing exceptions out of a destructor
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Configure Microsoft.AspNet.Identity to allow email address as username
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The C# version of this (in App_Code\IdentityModels.cs) is
public UserManager()
: base(new UserStore<ApplicationUser>(new ApplicationDbContext()))
{
UserValidator = new UserValidator<ApplicationUser>(this) { AllowOnlyAlphan...
How to “inverse match” with regex?
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answered Oct 2 '08 at 20:32
Vinko VrsalovicVinko Vrsalovic
236k4747 gold badges312312 silver badges359359 bronze badges
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How can I get last characters of a string
...tring method .substr() combined with the .length property.
var id = "ctl03_Tabs1";
var lastFive = id.substr(id.length - 5); // => "Tabs1"
var lastChar = id.substr(id.length - 1); // => "1"
This gets the characters starting at id.length - 5 and, since the second argument for .substr() is omi...
Spring Cache @Cacheable - not working while calling from another method of the same bean
...e the AspectJ solution.
@Service
@Scope(proxyMode = ScopedProxyMode.TARGET_CLASS)
class AService {
private final AService _aService;
@Autowired
public AService(AService aService) {
_aService = aService;
}
@Cacheable("employeeData")
public List<EmployeeData> ...