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Socket send函数和recv函数详解以及利用select()函数来进行指定时间的阻塞 ...
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通过重叠通信和计算在许多系统能提高性能。由一个智能通信控制器自动地执行通信的系统是真实的。轻－重线索是取得这 种重叠的一种机制。导致好性能的 一个可选的机制是使用非阻塞通信。一个阻塞发送开始调用初始...
Why do we need extern “C”{ #include } in C++?
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C and C++ are superficially similar, but each compiles into a very different set of code. When you include a header file with a C++ compiler, the compiler is expecting C++ code. If, however, it is a C header, then the compiler expe...
Get a filtered list of files in a directory
...ant_path = "[path to folder]"
included_extensions = ['jpg','jpeg', 'bmp', 'png', 'gif']
file_names = [fn for fn in os.listdir(relevant_path)
if any(fn.endswith(ext) for ext in included_extensions)]
I prefer this form of list comprehensions because it reads well in English.
I read th...
builtins.TypeError: must be str, not bytes
...rsa. Prove in python 3.5.2
import base64
read_file = open('/tmp/newgalax.png', 'rb')
data = read_file.read()
b64 = base64.b64encode(data)
print (b64)
# Save file
decode_b64 = base64.b64decode(b64)
out_file = open('/tmp/out_newgalax.png', 'wb')
out_file.write(decode_b64)
# Test in python 3.5.2
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How different is Objective-C from C++? [closed]
What are the main differences between Objective-C and C++ in terms of the syntax, features, paradigms, frameworks and libraries?
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How much faster is C++ than C#?
...ytecode based language like C# or Java that has a JIT cannot be as fast as C++ code. However C++ code used to be significantly faster for a long time, and also today still is in many cases. This is mainly due to the more advanced JIT optimizations being complicated to implement, and the really cool ...
创业测试：50个迹象表明你真该创业了 - 资讯 - 清泛网 - 专注C/C++及内核技术
...就开始工作吧。你或许需要打消购买心仪笔记本电脑或是智能手机的计划。
42.你悟出自己希望看到结果。当为别人工作时，你很难了解到你所有的辛勤工作是怎样为公司带来利润的。如果你想要看到自己动作过后的直接结果的...
jQuery - What are differences between $(document).ready and $(window).load?
... to attach
events by these names, use the .on() method, e.g. change
$("img").load(fn) to $(img).on("load", fn).1
$(window).load(function() {});
Should be changed to
$(window).on('load', function (e) {})
These are all equivalent:
$(function(){
});
jQuery(document).ready(function(){
});...
plot a circle with pyplot
...1)
ax.add_artist(circle2)
ax.add_artist(circle3)
fig.savefig('plotcircles.png')
This results in the following figure:
The first circle is at the origin, but by default clip_on is True, so the circle is clipped when ever it extends beyond the axes. The third (green) circle shows what happens wh...
How to Generate unique file names in C#
...ograms, I sometimes try e.g. 10 times to generate a readable name ("Image1.png"…"Image10.png") and if that fails (because the file already exists), I fall back to GUIDs.
Update:
Recently, I've also use DateTime.Now.Ticks instead of GUIDs:
var myUniqueFileName = string.Format(@"{0}.txt", DateTim...