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What breaking changes are introduced in C++11?
...to stop compiling: the introduction of explicit operator bool() in the standard library, replacing old instances of operator void*() . Granted, the code that this will break is probably code that should not have been valid in the first place, but it's still a breaking change nonetheless: programs...
Why are Perl 5's function prototypes bad?
... that function calls are correct: that is, that they have the right number and type of arguments. Perl's prototypes are not well-suited for this task. It's the misuse that's bad. Perl's prototypes have a singular and very different purpose:
Prototypes allow you to define functions that behave like ...
Data Modeling with Kafka? Topics and Partitions
...type of consumer so in the example above, I would just have a single topic and if you´ll decide to push some other kind of data through Kafka, you can add a new topic for that later.
Topics are registered in ZooKeeper which means that you might run into issues if trying to add too many of them, e....
Python != operation vs “is not”
...
== is an equality test. It checks whether the right hand side and the left hand side are equal objects (according to their __eq__ or __cmp__ methods.)
is is an identity test. It checks whether the right hand side and the left hand side are the very same object. No methodcalls ...
Is CSS Turing complete?
...ing-complete so long as you consider an appropriate accompanying HTML file and user interactions to be part of the “execution” of CSS. A pretty good implementation is available, and another implementation is included here:
body {
-webkit-animation: bugfix infinite 1s;
margin: 0.5e...
Windows x64编程中寄存器的使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
Windows x64编程中寄存器的使用下面是摘自 MSDN 的文章，在Win64下的 registers 用途RegisterStatusUseRAXVolatileReturn value registerRCXVolatileFirst integer 下面是摘自 MSDN 的文章，在 Win64 下的 registers 用途
Register
Status
Use
...
Manually raising (throwing) an exception in Python
...catch this')
raise Exception('This is the exception you expect to handle')
except Exception as error:
print('Caught this error: ' + repr(error))
>>> demo_bad_catch()
Caught this error: ValueError('Represents a hidden bug, do not catch this',)
Problem 2: Won't catch
A...
Split a module across several files
...
Rust's module system is actually incredibly flexible and will let you expose whatever kind of structure you want while hiding how your code is structured in files.
I think the key here is to make use of pub use, which will allow you to re-export identifiers from other modules....
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
...，选择合适的内存管理算法会带来明显的性能提升。比如nginx， 它在每个连接accept后
需求
系统的物理内存是有限的，而对内存的需求是变化的, 程序的动态性越强，内存管理就越重要，选择合适的内存管理算法会带来明显的...
Can you configure log4net in code instead of using a config file?
I understand why log4net uses app.config files for setting up logging - so you can easily change how information is logged without needing to recompile your code. But in my case I do not want to pack a app.config file with my executable. And I have no desire to modify my logging setup.
...