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Rails 2.3-style plugins and deprecation warnings running task in Heroku
... needed to be able to turn plugins on/off during my capistrano deployment, based on what flavor of the app I was deploying. Before I used config.plugins to specify what plugin to use. With this approach I'm using a "require" on config.before_configuration instead.
...
What kind of leaks does automatic reference counting in Objective-C not prevent or minimize?
...he published specification goes into in detail.
Much of the new behavior, based on keeping objects around as long as there is a strong pointer to them, is very similar to garbage collection on the Mac. However, the technical underpinnings are very different. Rather than having a garbage collector...
In which case do you use the JPA @JoinTable annotation?
...notationException:
Associations marked as mappedBy must not define database mappings
like @JoinTable or @JoinColumn
Let's pretend that you have an entity named Project and another entity named Task and each project can have many tasks.
You can design the database schema for this scenari...
Meaning of acronym SSO in the context of std::string
...on't pay for what you don't use.
First, consider the naive implementation based on what I outlined above:
class string {
public:
// all 83 member functions
private:
std::unique_ptr<char[]> m_data;
size_type m_size;
size_type m_capacity;
std::array<char, 16> m_sso;
}...
What exactly is a C pointer if not a memory address?
... emulate a 32-bit machine on a physical 16-bit machine and you extend your 64KB of RAM to up to 4GB by using disk storage and implement 32-bit pointers as offsets into a huge file. Those pointers aren't real memory addresses.
– Alexey Frunze
Mar 1 '13 at 9:20
...
Difference between Convert.ToString() and .ToString()
...tring tries to use IFormattable and IConvertible interfaces before calling base Object.ToString.
Example:
class FormattableType : IFormattable
{
private double value = 0.42;
public string ToString(string format, IFormatProvider formatProvider)
{
if (formatProvider == null)
...
How do I check if an object has a specific property in JavaScript?
...oming from the prototype. You could shift it to be more lenient or strict, based upon your situation, but at the very least this should be more helpful.
share
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improve this answer
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Default filter in Django admin
... }
def queryset(self, request, queryset): # Run the queryset based on your lookup values
if self.value() is None:
return queryset.filter(status=5)
elif int(self.value()) == 0:
return queryset.filter(status__lte=4)
elif int(self.value()) =...
How to clear MemoryCache?
...
SignaledChangeMonitor.Signaled += OnSignalRaised;
base.InitializationComplete();
}
public static void Signal(string name = null)
{
if (Signaled != null)
{
// Raise shared event to notify all subscribers
...
Using current time in UTC as default value in PostgreSQL
...
now() returns a value of type timestamp (just what we need) with your database's default time zone attached (e.g. 2018-11-11T12:07:22.3+05:00).
timezone('UTC', now()) turns our current time (of type timestamp with time zone) into the timezonless equivalent in UTC.
E.g., SELECT timestamp with time z...