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Python多进程库multiprocessing的封装 - Felix021 - narrow streets of cobble stone

https://www.felix021.com/blog/read.php?2141

Narrow streets of cobble stone. Virtualbox虚拟机中nat和host only的网络 冲突 问. 2014-11-30 22:09 , IT. Slices = multiprocess.split list(filelist, 8) #分成8份. Processes = map(lambda slice: multiprocess.spawn(file processor, slice), slices). Sysexit(multiprocess.start and join(processes). From multiprocessing import Process. Def split list(data, n slice, hash func=lambda i, d: i): #default: sequential. Slices = []. For i in range(n slice):. Slices.append([]). For i, d in enumerate(data):. For p in processes:.

felix021.com

ShellShock：小心bash里的大坑 - Felix021 - narrow streets of cobble stone

https://www.felix021.com/blog/read.php?2138

Narrow streets of cobble stone. 2014-9-27 00:55 , IT. Update@09.28 注意，根据 CoolShell这篇文章. 指出，官方的patch25并没有真正解决问题，仍然可以使用这种方式来实现注入 具体解释详见那篇文章 $ env X='() { (a)= \' bash -c "echo date"; ，经过测试，Ubuntu官方更新的Bash不受影响，但是自己patch的bash还是不能解决这个问题。 影响范围是bash 1.14 4.3 最新版 ，基本上你能想到的Linux/Unix机器都中招了，包括果粉们的macbook。 Env x="() { :;} echo vulnerable" bash -c "echo this is a test". This is a test. Bash: warning: x: ignoring function definition attempt. Bash: error importing function definition for `x'. This is a test. 注意，浏览器可以影...

felix021.com

virtualbox虚拟机中nat和host only的网络“冲突”问题 - Felix021 - narrow streets of cobble stone

https://www.felix021.com/blog/read.php?2140

Narrow streets of cobble stone. Virtualbox虚拟机中nat和host only的网络 冲突 问题. 2014-10-14 11:26 , IT. 我大约从2010年起，就一直在自己的机器上使用 Windows宿主机 Ubuntu Server@VBox虚拟机 这种组合. 虽然有人说用Bridged Network也能解决这个问题，但是前述方法却有更多好处 首先因为是外网无法直接访问这台机器，所以可以使用弱密码 其次虚拟机里使用NAT通过宿主机访问外部网络，因此像我现在主机上的双网卡的目标网络也可以免配置直接访问。 不过昨天遇到了个问题 貌似以前也曾经遇到过 ，就是突然不能访问外网了 但是仍然能ping通192.168.56.1，即宿主机的Host-Only IP ，经过测试发现如果把Host-Only的网卡去掉就没问题，所以看起来像是这两个网络冲突了。 Sudo route del default. Sudo route add default gw 10.0.2.2. Up route add default gw 10.0.2.2.

felix021.com

记一次蛋疼的性能调优 - Felix021 - narrow streets of cobble stone

https://www.felix021.com/blog/read.php?2142

Narrow streets of cobble stone. 2014-12-31 16:49 , IT. 大胆假设，小心求证，翻了一下python源码，Objects/dictobject.c 中 "static int dictresize(PyDictObject *mp, Py ssize t minused)" 函数被多处调用，其中PyDict SetItem的末尾的调用是 "dictresize(mp, (mp- ma used 50000? 2 : 4) * mp- ma used)"，也就是说，在需要rehash的情况下，按4倍 少于50000个item 或2倍的规模扩大。 Begin = time.time(). D = {}. If i % 50000 = 0:. Print '%d\t%.4f' % (i, time.time() - begin). D[i] = i. 640) {this.resized=true; this.width=640;}"/. From copy import deepcopy. Begin = time.time().

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Felix021 - narrow streets of cobble stone

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Narrow streets of cobble stone. 辅助数组是1,3,4,7,9,LIS是1,. 记j = 2 * id - i，也就是. 程序设计C / C / VC / ACM / ASM ." 程序设计. 网络 PHP HTML Apache IIS ASP。

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查看所有引用 - Felix021 - narrow streets of cobble stone

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Narrow streets of cobble stone. 此引用针对 狂喜 无线路由器asus wl-520gu通过校园网锐捷802.11x认证. 内容 上一篇文章花了很大的气力讲了开放源代码第三方家用无线路由器固件的基本情况和绕过这个 bug 的办法。 绕过 bug 在很多时候不失为一种有效的选择，特别是像之前我遇到的情况 开发组在. 辅助数组是1,3,4,7,9,LIS是1,. 记j = 2 * id - i，也就是. 程序设计C / C / VC / ACM / ASM ." 程序设计. 网络 PHP HTML Apache IIS ASP。

soulmachine.me

Deserialize a JSON String to a Binary Tree - soulmachine

http://www.soulmachine.me/blog/2015/06/22/deserialize-a-json-string-to-a-binary-tree

Deserialize a JSON String to a Binary Tree. We know that Jackson is very convenient to deserialize a JSON string into a. But how to deserialize a JSON String to a binary tree? The definition of binary tree node is as follows:. The JSON String is as follows:. Value": 2, "left": { "value": 1, "left": null, "right": null }, "right": { "value": 10, "left": { "value": 5, "left": null, "right": null }, "right": null } }. The above JSON string represents a binary tree as the following:. Value : 2, n. Left : { n.

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Calling C Code From Java Using JNI - soulmachine

http://www.soulmachine.me/blog/2015/07/23/calling-c-code-from-java-using-jni

Calling C Code From Java Using JNI. This blog is a fork of http:/ stuf.ro/calling-c-code-from-java-using-jni. With some errors fixed and C support added. In this tutorial we’ll be creating a Java application calling code from a native library. We’ll have a Java application called. Which will call the function. From a shared library named. Using Java Native Interface. First off, we’ll create a file named. Make the JVM aware of a function defined externally, named. Load an external library called. Alright,...