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Can't pickle when using multiprocessing Pool.map()

...he pool size. Here is a short example : from multiprocessing import Pool, cpu_count from multiprocessing.pool import ApplyResult # --------- see Stenven's solution above ------------- from copy_reg import pickle from types import MethodType def _pickle_method(method): func_name = method.im_fu...
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How to save username and password with Mercurial?

...efix = https://bitbucket.org/repo/path bb.username = foo bb.password = foo_passwd The ‘bb’ part is an arbitrary identifier and is used to match prefix with username and password - handy for managing different username/password combos with different sites (prefix) You can also only specify the...
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Why does Double.NaN==Double.NaN return false?

...cluding NaN. This is part of the IEEE 754 standard and implemented by the CPU/FPU. It is not something the JVM has to add any logic to support. http://en.wikipedia.org/wiki/NaN A comparison with a NaN always returns an unordered result even when comparing with itself. ... The equality and ine...
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What is difference between monolithic and micro kernel?

...t and some popular Linux distros have a Hurd port (Debian/Hurd, Arch Hurd, etc). – beatgammit Feb 2 '13 at 3:18 add a comment  |  ...
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Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?

...ow supports numpy. Some extensions are still not supported (Pandas, SciPy, etc.), take a look at the list of supported packages before making the change. Python 3 support is experimental at the moment. has just reached stable! As of 20th June 2014, PyPy3 2.3.1 - Fulcrum is out! PyPy sometimes isn't ...
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【PM干货】2015年阿里业务型PM笔试题 - 项目管理 - 清泛网 - 专注C/C++及内核技术

...界面优化方案。 3、淘宝过程中经常存在用户信息泄露的问题,而快递公司必须知道买家的联系方式,淘宝商家利用这个联系方式向用户发送营销信息。 请设计一个流程来改善这个问题,必须包括: 1)分析淘宝卖家、买家和...
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C#位运算符(C#按位与、按位或 等) - 更多技术 - 清泛网 - 专注C/C++及内核技术

...为1的位,新数中相应位为0。 (2)取一个数中某些指定位。 如想要取一个整数a(占2个字节)的低(高)字节,只需将a与八进制的377(177400)按位与即可。 (3)保留某一个数的某一位。 与一个数进行&运算...
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如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注IT技能提升

...ng-a-Machine-Learning-Classifier机器学习 算法如何针对某个分类问题决定使用何种机器学习算法? 当然,如果你真心在乎准确率,最好的途径就是测试一大堆各式各样的算法(同时确保在每个算法上也测试不同的参数),最后选择在...
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如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注IT技能提升

...ng-a-Machine-Learning-Classifier机器学习 算法如何针对某个分类问题决定使用何种机器学习算法? 当然,如果你真心在乎准确率,最好的途径就是测试一大堆各式各样的算法(同时确保在每个算法上也测试不同的参数),最后选择在...
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如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注IT技能提升

...ng-a-Machine-Learning-Classifier机器学习 算法如何针对某个分类问题决定使用何种机器学习算法? 当然,如果你真心在乎准确率,最好的途径就是测试一大堆各式各样的算法(同时确保在每个算法上也测试不同的参数),最后选择在...