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C++ performance vs. Java/C#
...) in C# without tremendous work, while it's a built-in feature of C++. Immutable data is an interesting solution, but not everything can be made immutable, so it's not even enough, by far).
So, C# remains an pleasant language as long as you want something that works, but a frustrating language the...
Polymorphism in C++
...types.
"to" parametric types from values of constant type
They do not establish polymorphic contexts by themselves, but do help empower/simplify code inside such contexts.
You may feel cheated... it doesn't seem like much. The significance is that in parametric polymorphic contexts (i.e. inside...
Unicode equivalents for \w and \b in Java regular expressions?
... talk about whitespace properly is super-annoying. Consider the following table. For each of those code points, there is both a J-results column
for Java and a P-results column for Perl or any other PCRE-based regex engine:
Regex 001A 0085 00A0 2029
J...
OceanBase使用libeasy原理源码分析：服务器端 - 数据库(内核) - 清泛网 - ...
...回调函数分别为easy_connection_on_readable，easy_connection_on_writable和easy_connection_on_timeout_conn(注意，仅仅是初始化，还没有激活)
6. 激活该连接的read_watcher(即让该连接所属的IO线程的event loop监听这个连接的读事件)， 设置其回调函数为e...
Should a Netflix or Twitter-style web service use REST or SOAP? [closed]
...been waiting for a question like this for close to a year now. It was inevitable that this day would come and I am sure we are going to see many more questions like this in the coming months.
The warning signs
You are absolutely correct, it does take longer to build RESTful clients than SOAP clien...
Difference between MEAN.js and MEAN.io
... is the one between MEAN.io and MEAN.js in a more readable format
<table border="1" cellpadding="10"><tbody><tr><td valign="top" width="33%"><br><br><h1>MeanJS.org. provides these benefits that MEAN.io. doesn't</h1><br><br><b>Hel...
Why is it slower to iterate over a small string than a small list?
... just
9 LOAD_CONST 6 (('a', 'b', 'c'))
as tuples are immutable. Test:
>>> python3 -m timeit '[x for x in ("a", "b", "c")]'
1000000 loops, best of 3: 0.369 usec per loop
Great, back up to speed.
For Python 2:
def list_iterate():
[item for item in ["a", "b", "c"]]
...
What is the purpose of Flask's context stacks?
...alues in a script that should be run from the shell. For example, a "setup_tables.py" script...
from myapp import app, db
# Set up models
db.create_all()
In this case, the Flask-SQLAlchemy extension knows about the app application, but during create_all() it will throw an error complaining about...
How to implement classic sorting algorithms in modern C++?
...td::not1 around a function object.
C++ Style
There is no generally acceptable C++14 style yet. For better or for worse, I closely follow Scott Meyers's draft Effective Modern C++ and Herb Sutter's revamped GotW. I use the following style recommendations:
Herb Sutter's "Almost Always Auto" and S...
Is “double hashing” a password less secure than just hashing it once?
...broken with a pre-computed dictionary attack (for example, using a Rainbow Table). Otherwise, the attacker must spend time to compute a hash for each password and see if it matches the stored hash.
All passwords are not equally likely. Attackers might exhaustively search all short passwords, but th...