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Effects of the extern keyword on C functions
...rstand that a header is only needed when other source files will use the information; the header is (ab)used to store declaration information for one source file and no other file is expected to include it. Occasionally, it occurs for more contorted reasons.
– Jonathan Leffler
...
Chrome extension: accessing localStorage in content script
...rome.storage API. It's better then localStorage because you can:
store information from your content script without the need for
message passing between content script and extension;
store your data as JavaScript objects without serializing them to JSON (localStorage only stores strings).
Here...
What does “#define _GNU_SOURCE” imply?
...ammer for the porting of strfry memfrob and similar amenities to other platforms and tool-chains.
– Massimo
May 19 at 21:38
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When I catch an exception, how do I get the type, file, and line number?
...
Simplest form that worked for me.
import traceback
try:
print(4/0)
except ZeroDivisionError:
print(traceback.format_exc())
Output
Traceback (most recent call last):
File "/path/to/file.py", line 51, in <module>
...
How do you execute an arbitrary native command from a string?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
In WPF, what are the differences between the x:Name and Name attributes?
...rty of a FrameworkElement, listed as any other wpf element property in the form of a xaml attribute.
As a consequence, this also means x:Name can be used on a wider range of objects. This is a technique to enable anything in xaml to be referenced by a given name.
...
Java `final` method: what does it promise?
...r of reasons to prevent something from being customizable, including:
Performance -- Some compilers can analyse and optimise the operation, especially the one without side-effects.
Obtain encapsulated data -- look at immutable Objects where their attributes are set at the construction time and sho...
Benefits of inline functions in C++?
...vantages of using inline functions in C++? I see that it only increases performance for the code that the compiler outputs, but with today's optimized compilers, fast CPUs, huge memory etc. (not like in the 1980< where memory was scarce and everything had to fit in 100KB of memory) what advantages d...
What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
How do I execute inserts and updates in an Alembic upgrade script?
...odels. It should be relatively straightforward to adapt this to the other forms.
Note that Alembic provides some basic data functions: op.bulk_insert() and op.execute(). If the operations are fairly minimal, use those. If the migration requires relationships or other complex interactions, I prefe...