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linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...胁的或不适宜的站点。 三、CDN简介: 文件下载加速服务: 四、Web缓存的类型和特点: Web缓存的位置可以有三种,一是可以防止在客户端,二是放在服务器,三是放在客户端与服务器之间的某个网络节点上,这个...
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Assign pandas dataframe column dtypes

...df = pd.DataFrame({'x': {0: 'a', 1: 'b'}, 'y': {0: '1', 1: '2'}, 'z': {0: '2018-05-01', 1: '2018-05-02'}}) df.dtypes x object y object z object dtype: object df x y z 0 a 1 2018-05-01 1 b 2 2018-05-02 You can apply these to each column you want to convert: df["y"]...
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How do I view all commits for a specific day?

...:37:16 -0700 Last commit: 1d4c88c 1d4c88ce6a15efaceda1d653eed3346fcae8f5e6 2018-10-13 21:32:27 -0700 Date to search for commits: 2015-08-13 Date to search for commits: 2015-08-03 375bcfb 375bcfbbf548134a4e34c36e3f28d87c53b2445f Mike Slinn 2015-08-03 13:37:16 -0700 'this is a comment' Date to sear...
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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

...的消息发送和接收首先在机器中安装zmq库步骤如下:1)下载zeromq的源代码,Zer...本文内容摘要:1)安装zeromq、2)实例说明使用zmq进行网络间的消息发送和接收 首先在机器中安装zmq库 步骤如下: 1)下载zeromq的源代码,ZeroMQ...
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莱昂氏unix源代码分析 PDF - 文档下载 - 清泛网 - 专注C/C++及内核技术

莱昂氏unix源代码分析 PDF莱昂 源代码本书由上、下两篇组成。上篇为UNIX版本6的源代码,下篇是莱昂先生对UNIX操作系统版本6源代码的详细分析。本书语言简洁、透彻,曾作为未公开...本书由上、下两篇组成。上篇为UNIX版本6的源...
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Explaining Python's '__enter__' and '__exit__'

...t;> except: >>> raise #will result (client side) : 2018-12-18 14:44:05,863 : INFO --> Initiating My connection 2018-12-18 14:44:05,863 : INFO --> connection success b'connected' 2018-12-18 14:44:05,864 : INFO --> CM suppress exception #result...
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How to install and run phpize

...lled on your machine, mine is 7.2 PHP 7.2.3-1ubuntu1 (cli) (built: Mar 14 2018 22:03:58) ( NTS ) Copyright (c) 1997-2018 The PHP Group Zend Engine v3.2.0, Copyright (c) 1998-2018 Zend Technologies with Zend OPcache v7.2.3-1ubuntu1, Copyright (c) 1999-2018, by Zend Technologies Step 2: Then to...
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libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术

...结,特此写在这里,方便给同样刚入门的朋友指引。 一.下载安装 1.到http://curl.haxx.se/download.html上下载最新版本,由于公司的机器安装rpm有依赖关系,所以直接下载了source 2.编译。解压后进入curl的目录,直接执行 make all ...
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Can I query MongoDB ObjectId by date?

...$and":[ {"$gte":[{"$convert":{"input":"$_id","to":"date"}}, ISODate("2018-07-03T00:00:00.000Z")]}, {"$lte":[{"$convert":{"input":"$_id","to":"date"}}, ISODate("2018-07-03T11:59:59.999Z")]} ] } }) OR You can use shorthand $toDate to achieve the same. db.collectionname.find({ "...
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Find objects between two dates MongoDB

...te and $lt: db.CollectionName.find({"whenCreated": { '$gte': ISODate("2018-03-06T13:10:40.294Z"), '$lt': ISODate("2018-05-06T13:10:40.294Z") }}); share | improve this answer | ...