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Memory management in Qt?
.../ someButton still has no owner.
QWidget* widget = new QWidget;
widget->setLayout(layout); // someButton is "re-parented".
// widget now owns someButton.
Another example:
QMainWindow* window = new QMainWindow;
QWidget* widget = new QWidget; //widget has no owner
wind...
Git: what is a dangling commit/blob and where do they come from?
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How do you properly determine the current script directory in Python?
...e infrastructure to load scripts. If you must use these methods, I suggest setting __file__ in the globals you pass to the script so it can read that filename.
There's no other way to get the filename in execed code: as you note, the CWD may be in a completely different place.
...
Visual Studio refuses to forget breakpoints?
...points persist. Child breakpoints are created (in certain situations) when setting breakpoints during a debug session.
A surefire way of deleting a breakpoint (and children) is to manually look for it in the breakpoint window, and delete it from there. (Select the top node of the entry, hit Delete....
What is java interface equivalent in Ruby?
...on {
remove(element);
}
}
Another example: where in java.util.Set<E> does it actually say that it is, you know, a set? Nowhere! Or more precisely, in the documentation. In English.
In pretty much all cases of interfaces, both from Java and .NET, all the relevant information is act...
List attributes of an object
... dir worked better on classes with overloaded attribute get/set
– ogurets
Jul 7 '16 at 22:43
...
Does python have an equivalent to Java Class.forName()?
...stance: Are you trying to load a saved object based on its type name and a set of parameters? Python spells this unpickling and you should look at the pickle module. And even though the unpickling process does exactly what you describe, you don't have to worry about how it works internally:
>>...
What Content-Type value should I send for my XML sitemap?
... text/xml and application/xml is the default character encoding if the charset parameter is omitted:
Text/xml and application/xml behave differently when the charset
parameter is not explicitly specified. If the default charset (i.e.,
US-ASCII) for text/xml is inconvenient for some reason (...
SQL update from one Table to another based on a ID match
...eve an UPDATE FROM with a JOIN will help:
MS SQL
UPDATE
Sales_Import
SET
Sales_Import.AccountNumber = RAN.AccountNumber
FROM
Sales_Import SI
INNER JOIN
RetrieveAccountNumber RAN
ON
SI.LeadID = RAN.LeadID;
MySQL and MariaDB
UPDATE
Sales_Import SI,
RetrieveAccountNumb...
Lost my schema.rb! Can it be regenerated?
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