cca175 preparation

Learning a language is a constant practice, Python is currently used for data analysis of the most popular language, I recently bought a book "Data analysis Using Python" (Wes McKinney), but also to the library to borrow this "Python Data analysis Basic Tutorial--numpy study Guide" (second edition), ready to the Python data analysis tool door into the haha, gossip less, directly into the topic.First, "Data analysis using Python," the translator strongly recommended that the computer environment

current phoneWindows adb shell pm List packages–f | findstr ABC Below is a mix of grep and findstr, please identify.2. Install the app to your phone:@adb install-r \\10.206.69.73\ outsourcing work record \ Test Team \youdaonote.apk3. Filter the application:Installed package name in the phone application with the keyword "Youdao": adb shell pm List packages–f | Findstr YoudaoGet: package:/data/app/com.youdao.note-1/base.apk=com.youdao.note4. Pull the mobile app to the appt root directory on the

Black solidCircle: Hollow CircleLi>111Li> Li>222Li> Li>333Li> Li>444Li> ul>2) ordered listLi{[email protected]}*3 #sub中从5开始创建创建3列I: lowercase roman character serial numberI: Uppercase Roman character serial numberA: Capital Letter Serial NumberA: Small Letter serial Number ol type= "I"> Li>5Li> Li>6Li> Li>7Li> ol>3) Define a list DL > DT > Title 1dt> dd> Data definition dd> dl>HTML Base 1 (Environment

1, local server environment (Wampsever,:http://sw.bos.baidu.com/sw-search-sp/software/9ffb1f800d39c/wampserver_x86_3.0.6.exe for personal use)2,thinkphp3.2 Development Kit (: http://www.thinkphp.cn/donate/download/id/610.html)3, will download the good TP package, placed in the server WWW directory (such as).4, Code Editor (personal use of phpstrom, other editors can also use)5, Database Construction, table construction (see Code for details).SET foreign_key_checks = 0;D ROP TABLEIFEXISTS N_user;

siteThe HTTP data that is transmitted based on the SSL protocol is the category of HTTPS. Here's a quick introduction to how to build an HTTPS site.For each client that wants to access an HTTPS site, you need to go through some of these steps:1. Install dependent packages such as OpenSSL in the server2. Generate SSL keys and certificates3. Configure the certificate to the Web server4. Install the CA certificate on the clientYou can first install OpenSSL and openssl-devel two packages via Yum or

order to start from scratch to plan an app to the app online this process as the main line, as far as possible to fit the actual combat, the whole process involved in the various types of knowledge, not limited to a certain aspect, so that the reader of the app development knowledge has a comprehensive understanding, help them broaden their horizons, And be able to complete the development of the app in a more professional way.Many of the contents of this book are on official documents, and the

Python in the HTTP protocol interface related libraries have URLLIB,URLLIB2 and Reqeusts library, which Reqeusts library for the most convenient, so I also mainly use the requests library to do the interface test HTTP protocol. Let's start by looking at what environment information is needed:First, install PythonThe Mac comes with Python installed, and that's not much to say.Second, install the virtual environment:We can install multiple versions of Python on a single machine, so we can install

1. Operating systemOperating system: windowsserver2016;2.pythonPython version: Python-3.6.2-amd64 (3.6.2 64-bit executable version): https://www.python.org/downloads/; Choose to quickly install to the user you are using and add path, and execute it using administrator mode; Executable files are admin mode)On the command line, enter: Python to see if it is successful3. Editing tools Vscode:vscodesetup-x64-1.14.2;:https://code.visualstudio.com/download Install Python support (Donjayamanne

through the HashMap bottom to achieve, but is HashMap value is all assigned to a constant object object, internal additions and deletions and other methods are directly called HashMap method, so do not repeat, and so on, such as HashMap in-depth analysis. private transient hashmap map; private static final object PRESENT = new object ( ); public boolean add (e e) { return map.put (E, PRESENT) ==null ; public boolean remove (Object o) { return map.remove (o) ==present;

. If only the link of the switch to external (such as firewall, etc.) is down, and the switch itself does not fail, then bonding will assume that the link is not a problem and continue to use.Iii. SummaryThis paper simply records the details and considerations of the configuration of the main standby mode of the ubuntu14.04 dual NIC, the other versions may be slightly different and pay attention to practice. Does the network need to be master, do you have a master backup of your life, and can yo

FCITX keyboard input system, because Sogou is based on FCITX, and the system default is IBUs(2) Install Sogou Input Method (3) Set system parameters and some points of attention sudo add-apt-repository ppa:fcitx-team/ Nightly sudo apt-get update sudo apt-get install FCITX sudo apt-get install Fcitx-config-gtk sudo apt-get Install fcitx-table-all sudo Apt-get install im-switch Check if FCITX is complete, Win key search Fcitx go sogou official website Download Linux version of th

types of standardization available for machine learning-L1 standardizationIt is also known as the minimum absolute deviation. This normalization modifies these values so that the sum of the absolute values is always at most in each row 1 . It can be implemented in the following Python code, using the input data above-# Normalize Data ' L1 ' )print("\nl1 normalized data:\n", DATA_NORMALIZED_L1)The above line of code produces the following output:L1 normalized data:[[0.22105263 -0.2 0.57894737][

files under the SRC folder to find the file with the suffix,,, and cpp hpp c h Save it in the list At the same time, the corresponding folder path is saved in set (the reason to choose Set instead of list is because there may be many files in the same folder, and the folder is saved once); Processes the files saved in the list, each time the file is processed, reads the matching folders in the set, and replaces them with such #include "asm forms #include "./src/share/vm/asm . Other que

original value is overwritten!Set path= (optical equals): Delete environment variable pathSet path=xxxx;%path%: Adds a new value based on the original valueConfiguring Environment Variables ClasspathThe environment variable path holds the paths to the Windows executable file, and Classpath holds the path to the JVM executable file, the path to the. class file. When you run a Java file with the Java class name, you need to set classpath if you want to do so without writing the path."Set Classpat

whether the IP can ping throughDev Board Ping Host/# Ping 192.168.1.10 (host IP)PING 192.168.1.10 (192.168.1.10): Data bytesBytes from 192.168.1.10:seq=0 ttl=64 time=1.888 msBytes from 192.168.1.10:seq=1 ttl=64 time=0.763 msBytes from 192.168.1.10:seq=2 ttl=64 time=0.733 msBytes from 192.168.1.10:seq=3 ttl=64 time=0.744 msBytes from 192.168.1.10:seq=4 ttl=64 time=0.769 ms^c---192.168.1.10 ping statistics---5 packets transmitted, 5 packets received, 0% packet lossRound-trip Min/avg/max = 0.733/0

inherits from the parent class does not need to be abstract class or interface, normal also line);Initialization of anonymous inner classes (using non-static statement blocks)1 classneifather{2 intx;3 voidoutput () {4System.out.println ("in Neifather");5 }6 }7 8 Public classtest{9 Public Static voidMain (string[] args) {TenNeifather NF =NewNeifather () One { A { -x = 5; - } the voidoutput () { -System.out.println ("x=" +x); -

] ~]# mount/dev/sdb1/mnt/boot/[[email protected] ~]# mount/dev/sdb2/mnt/sysroot/#创建两个文件夹对应挂载两个分区 [[email protected] sysroot]# for dir in ' ls/|Grep-v boot ';d o mkdir-pv./${dir};d One#ls/| Grep-v boot lists the files under the current system root directory, except that boot# creates the listed folders in the/mnt/sysroot directory with A For loopHere we have the basic environment ready, and then we can migrate the commands to the root.650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/73/

bootMBR: The primary boot partition block in the first sector of the first bootable device, including the boot loaderBoot loader: Provides menu, load kernel, transfer control to other loader, can be installed in MBR or boot sector (boot Sector ) inKernel file: Start the operating system function3, disk partition selection(1) directory tree structure(2) The relationship between file system and directory tree--Mountis to use the directory as the entry point, the partition of the disk data placed

populatedEnum V4l2_buf_type type; V4l2_buf_type_video_capture__U32 index; This is explained here because count buffer is established when IOCTL-VIDIOC_REQBUFS is called. So, the valid range of index here is: 0 to count-1.Memory:v4l2_memory_mmap.The buffer specified by the struct is fed into the output queue, indicating that the buffer can be populated with device data.Usage:IOCTL--VIDIOC_DQBUF:int ioctl (int fd, int request, struct v4l2_buffer* ARGP);Parameter one: The handle produced by open (

assemblies Spring.Core.dll and Spring.web.dl,common.logging.dllFor ease of administration, create a new BLL folder and copy the three dll assemblies from the spring.net installation directory , and then add a reference to the three assemblies. I am using VS2010, so copy the DLL file under the 4.0 directory . Under the Spring.net\spring.net\spring.net-1.3.2\spring.net\bin\net\4.0\release directory3. Configure Web. configIn the Web. config configuration file for the website, configure the followi