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快速理解 高频对冲套利自动交易（程式化交易） - 更多技术 - 清泛网 - 专注...
...啊。我觉得你说的好像是每天不停地下很多正反单。然后把符合盈利要求得平掉，然后重现开新单。留下浮亏的。直到浮亏的盈利再平。所以每天平仓的都是盈利的。过夜的都是浮亏的。直到浮亏变盈。)
你的理解大体上没有...
HTML minification? [closed]
...ills. Knowing that a lot of high level sites even right now are not using gzip (which is trivial), it is understandable that people were reluctant in minifying html.
So why were people minifying js, but not html? When you minify JS, you do the following things:
remove comments
remove blanks (tabs...
Visual Studio support for new C / C++ standards?
...programming environment. Portability of code across Windows-Linux-Solaris-AIX-etc is usually important in my experience, and that is not at all supported by MS tools, unfortunately.
share
|
improve...
best way to preserve numpy arrays on disk
... to "pickle" directly into a compressed archive by doing:
import pickle, gzip, lzma, bz2
pickle.dump( data, gzip.open( 'data.pkl.gz', 'wb' ) )
pickle.dump( data, lzma.open( 'data.pkl.lzma', 'wb' ) )
pickle.dump( data, bz2.open( 'data.pkl.bz2', 'wb' ) )
Appendix
import numpy as np
import...
google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
...个懒惰的同学已经定义好了这么一个接口（万幸，他至少把接口定义好了）：
FooInterface.h
#ifndef FOOINTERFACE_H_
#define FOOINTERFACE_H_
#include <string>
namespace seamless {
class FooInterface {
public:
virtual ~FooInterface() {}
pu...
Possible to make labels appear when hovering over a point in matplotlib?
...= i, 0], X_reduced[y == i, 1], c=c, label=target_name, picker=True) with a zip for i, c and target_name, is then the order of my indexes messed up? And I cant look up anymore to which datapoint it belongs?
– Chris
Nov 5 '15 at 13:01
...
Get MIME type from filename extension
...
{".air", "application/vnd.adobe.air-application-installer-package+zip"},
{".amc", "application/x-mpeg"},
{".application", "application/x-ms-application"},
{".art", "image/x-jg"},
{".asa", "application/xml"},
{".asax", "application/xml"},
{".as...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...程）》
最新版拓展下载：
de.ullisroboterseite.ursai2pahomqtt.aix
MQTT（Message Queuing Telemetry Transport：消息队列遥测传输）
MQTT 发明于 1999 年，为物联网设计的轻量级协议，基于TCP协议实现。
MQTT 协议文档：https://mqtt.org/
...
What is the most pythonic way to check if an object is a number?
...ector):
if hasattr(foo, '__len__'):
return sum([a*b for a,b in zip(foo, a_vector)])
else:
return [foo*b for b in a_vector]
Or, for the duck-typing approach, you can try iterating on foo first:
def do_mult(foo, a_vector):
try:
return sum([a*b for a,b in zip(foo,...
Django - how to create a file and save it to a model's FileField?
...e file mode while opening the file. So, f = open('/path/to/file', 'r') For ZIP kind of file, f = open('/path/to/file.zip', 'rb')
– rajagopalx
Dec 14 '17 at 19:43
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