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OnNotify函数 ON_NOTIFY消息总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...自定义WM_NOTIFY消息。基于这些思路都不能修改MFC底层的代码。
用调试的方式查看MFC的实现代码，发现重写ON_MESSAGE宏不能实现，具有ID判断的只在WM_NOTIFY和WM_COMMAND两个消息中，两个消息最终都会进入 CCmdTarget::OnCmdMsg函数进行ID判...
why is plotting with Matplotlib so slow?
... 'y-', 'm-', 'k-', 'c-']
lines = [ax.plot(x, y, style)[0] for ax, style in zip(axes, styles)]
fig.show()
tstart = time.time()
for i in xrange(1, 20):
for j, line in enumerate(lines, start=1):
line.set_ydata(np.sin(j*x + i/10.0))
fig.canvas.draw()
print 'FPS:' , 20/(time.time()-tst...
Pythonic way to check if a list is sorted or not
...eger indexing:
# python2 only
if str is bytes:
from itertools import izip as zip
def is_sorted(l):
return all(a <= b for a, b in zip(l, l[1:]))
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java.nio.file.Path for a classpath resource
...e), or having to open and thus safely close the filesystem ourselves (like zip/jar files).
Therefore, the solution above encapsulates the actual action in an interface, handles both cases, safely closing afterwards in the second case, and works from Java 7 to Java 10. It probes whether there is a...
Plotting a list of (x, y) coordinates in python matplotlib
...lt.show()
will produce:
To unpack your data from pairs into lists use zip:
x, y = zip(*li)
So, the one-liner:
plt.scatter(*zip(*li))
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Utilizing multi core for tar+gzip/bzip compression/decompression
...normally compress using tar zcvf and decompress using tar zxvf (using gzip due to habit).
6 Answers
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Finding the index of an item in a list
...ch is pretty much the same approach as enumerate):
from itertools import izip as zip, count # izip for maximum efficiency
[i for i, j in zip(count(), ['foo', 'bar', 'baz']) if j == 'bar']
This is more efficient for larger lists than using enumerate():
$ python -m timeit -s "from itertools import...
绘画动画组件 · App Inventor 2 中文网
...路 在线 客服 扫码添加客服咨询 我要 分享 扫码分享到朋友圈 顶部 var qrcode = new QRCode("qrcode", { text: window.location.href + "?f=share", //...
How to POST JSON Data With PHP cURL?
...me" => "Lastnameson","phone" => "555-1212", "province" => "ON", "zip" => "123 ABC" ) );
$postdata = json_encode($data);
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, ...
How to perform element-wise multiplication of two lists?
...
Use a list comprehension mixed with zip():.
[a*b for a,b in zip(lista,listb)]
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