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When should you use 'friend' in C++?
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As an extra note, the C++ FAQ mentions that friend enhances encapsulation. friend grants selective access to members, just like protected does. Any fine-grained control is better than granting public access. Other languages define selective access mechanisms too, consider C#'...
Understanding “randomness”
... @Trufa just trust rand() to actually be random, and don't try to 'enhance' it's randomness. Don't set the seed multiple times. Any individual seed is perfectly fine, as long as it's semi-random itself. Lots of implementations I've seen use the UNIX epoch as the seed, which changes every sec...
How do I rename a column in a SQLite database table?
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This was just fixed with 2018-09-15 (3.25.0)
Enhancements the ALTER TABLE command:
Add support for renaming columns within a table using ALTER TABLE table RENAME COLUMN oldname TO newname.
Fix table rename feature so that it also updates references to the rena...
Java switch statement multiple cases
...unctional language and that isn't a bad thing.
I will post any updates or enhancements to this Gist on Github.
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JUnit 4 Test Suites
...estSuite over the annotation and you can take advantage of all the JUnit 4 enhancements if you use the organizationally equivalent annotation.
– Thunderforge
Dec 18 '13 at 3:26
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Comparator.reversed() does not compile using lambda
...t; u.getName()).reversed());
It might be possible for the compiler to be enhanced to cover this case in a future release.
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PermGen elimination in JDK 8
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This is one of the new features of Java 8, part of JDK Enhancement Proposals 122:
Remove the permanent generation from the Hotspot JVM and thus the need to tune the size of the permanent generation.
The list of all the JEPs that will be included in Java 8 can be found on th...
What algorithms compute directions from point A to point B on a map?
... Actually, on further consideration, you're entirely right. You could enhance an existing algorithm to make use of this by simply adding the Great Circle Distance between the target node and the destination to the cost of the edge being evaluated. I'm actually not sure if our algorithm did that...
Windows batch files: .bat vs .cmd?
...varname:expression%
Command substitution: FOR /F (existed before, has been enhanced)
Functions: CALL :label
Order of Execution:
If both .bat and .cmd versions of a script (test.bat, test.cmd) are in the same folder and you run the script without the extension (test), by default the .bat version o...
Is it possible to use Java 8 for Android development?
...ools. Luckily, these
constructs are basically some ‘syntactic sugar’ enhancements which
give developers the shortcomings of things like ‘anonymous classes’
and they can be translated into Java 6 or Java 7 classes.
A recent approach for translating a Java 8 source code into lower J...