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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#'...
Does using final for variables in Java improve garbage collection?
...also use local variables instead of fields when it is possible in order to enhance memory garbage collection and to reduce referential ties.
– sivi
Mar 10 '14 at 9:21
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Python: Get the first character of the first string in a list?
...ng" and then Numpy's "masking, slicing, subsetting, indexing, then numpy's enhanced fancy indexing".
These two videos cleared things up for me:
"Losing your Loops, Fast Numerical Computing with NumPy" by PyCon 2015:
https://youtu.be/EEUXKG97YRw?t=22m22s
"NumPy Beginner | SciPy 2016 Tutorial" by A...
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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使用 C++ 处理 JSON 数据交换格式 - C/C++ - 清泛网 - 专注C/C++及内核技术
... 是比较出名的 C++ JSON 解析库。在 JSON官网也是首推的。
下载地址为：http://sourceforge.NET/projects/jsoncpp。本文使用的 jsoncpp 版本为：0.5.0。
三、jsoncpp 在 Windows 下的编译
要使用第三方源码库，第一步少不了的就是编译，将源码...
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...
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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