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Efficient way to apply multiple filters to pandas DataFrame or Series

...(np.logical_and, conditions) c_1 = data.col1 == True c_2 = data.col2 < 64 c_3 = data.col3 != 4 data_filtered = data[conjunction(c1,c2,c3)] np.logical operates on and is fast, but does not take more than two arguments, which is handled by functools.reduce. Note that this still has some redundan...
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Difference between malloc and calloc?

... 364 A less known difference is that in operating systems with optimistic memory allocation, like Li...
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Share Large, Read-Only Numpy Array Between Multiprocessing Processes

...variable. From the discussion page you linked, it appears that support for 64-bit Linux was added to sharedmem a while back, so it could be a non-issue. I don't know about this one. No. Refer to example below. Example #!/usr/bin/env python from multiprocessing import Process import sharedmem impo...
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Change MySQL default character set to UTF-8 in my.cnf?

... Is your first line max_allowed_packet=64M related to this UTF8 issue in any way? – malhal Nov 29 '12 at 3:40 ...
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Purpose of ESI & EDI registers?

...0470497025 See section 12.8 How C sees Command-Line Arguments. Note that 64-bit calling conventions are different from 32-bit calling conventions, and I am not sure if these registers are call-preserved or not. share ...
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How to see which flags -march=native will activate?

...on gcc 4.9.2 on a Phenom, the output includes these: --param l1-cache-size=64 --param l1-cache-line-size=64 --param l2-cache-size=512 – Daniel Santos Jan 29 '15 at 0:22 ...
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Eclipse RCP Plug-in开发自学教程(Eclipse3.6) - 文档下载 - 清泛网 - ...

...salever@126.com。 之前有一套基于Eclipse3.3版本的教程,也本人整理,由于本人的疏忽,导致网络上的版本各不相同,但分享已久,无法改变,希望大家谅解并使用新版本的教程。 本教程由本人发布在www.ceclipse.org以及本人的blog...
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Upload artifacts to Nexus, without Maven

...accomplish this. Where profile is your sonatype/nexus profileID (such as 4364f3bbaf163) and repo (such as comdorkbox-1003) are parsed from the response when you upload your initial POM/Jar. Close repo: /** * Closes the repo and (the server) will verify everything is correct. * @throws IOExceptio...
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ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术

...; return 0; } //绑定地址 tcp://*:7766 //也就使用tcp协议进行通信,使用网络端口 7766 if(zmq_bind(pSock, pAddr) < 0) { zmq_close(pSock); zmq_ctx_destroy(pCtx); return 0; } printf("bind at : %s\n", pAddr); ...
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Import PEM into Java Key Store

.../usr/src/secure/lib/libcrypto/../../../crypto/openssl/crypto/pem/pem_lib.c:648:Expecting: TRUSTED CERTIFICATE – Brian Knoblauch Apr 16 '14 at 17:25 4 ...