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, returns the list of variables, methods, and definitions in the current scope;2, with parameters, returns the properties of the parameter, the method list.3. If the parameter contains method __dir__ (), the method will be called. When the argument is an instance.4. If the parameter does not contain __dir__ (), the method will collect the parameter information to the maximum Delattr (object, name) Delete an object named Name property This article is from the "Operatio

selector does not have an upward selection (sibling, parent, ancestor)15.color Color properties can be inherited16.inherit causes the child element to inherit the value of the parent element on the specified CSS property, and if the parent element does not set this value, it does not inherit this property value of the ancestor element (many properties are not inherited by default, such as height, so they are added inherit to inherit)17.frame and body do not coexist, although the IFRAME and body

Ref: 795065431 #-*-coding:utf-8-*-2 ImportUrllib3 Importurllib.request4 ImportRe5 6 defgethtml (URL):7Request =urllib.request.Request (URL)8Response =Urllib.request.urlopen (Request)9HTML =Response.read ()Ten returnHTML One A defgetimg (HTML): -Reg ='data-original= "(. +?\.jpg)"' -Imgre =Re.compile (REG) theImglist = Re.findall (Imgre, Html.decode ('Utf-8')) -Localpath='g:/photo/' -x = 1 - forImgurlinchimglist: +Urllib.request.urlretrieve (imgurl,localpath+'%s.jpg'%x) - Pr

var a = 1; Console.log (a);The first line of code, VAR a=1, is seen by the engine as two words: Var A and a=1.First, the compiler will ask if there is a declared variable a in the current scope (this is the global scope), or var a if it exists, otherwise the variable A is declared within the current scope (at this point, the variable a is in scope.) When testing, you can see that even if two lines of code are inverted, they do not throw referenceerror, but instead print undefined, which means th

Spring describes the dependencies between beans and beans through a configuration file that uses the Java language's reflection capabilities to instantiate the bean and establish a dependency between the beans.Spring's IOC (control reversal) container provides services such as bean instance caching, lifecycle management, bean Instance broker, event publishing, and resource loading.When initializing the beanfactory, it must be provided with a log framework so that the spring container is started

after it starts. Are some services automatically stopped when they are not being used by other services or programs? After deleting the contents of the data directory, re-executed the mysqld--initialize to be installed. Step over the pit three After initialization is completed and then logged in with Mysql-u root, it is found that the password is still required, found that mysqld--initialize initialization will generate a random password, I found a. err file below the data directory, and found

virtualenvwrapper (Turn off the terminal and reopen one) $ mkvirtualenv rst $ pip Install docutils rst2pdf Sphinx To use this virtualenv in the future, simply enter Workon rst in the terminal rst2html.py can convert rest to HTML rst2odt.py can convert rest to the ODT format, opened with open office, can be saved as a doc or docx format, or can be saved as a PDF format Rst2pdf can theoretically convert rest to PDF, but appears to be unable to run under Python3 w

Author in the development team Original article address: http://www.uml.org.cn/bzgf/200801255.asp Generally, each development team has one or more professional technical document writers who write technical documents for their products. However, not all companies have dedicated technical document writers. If you have to compile a technical document that is associated with your software product, remember t

Readers/writers Lock Data structure:Readwrit's Initrwlock ()BOOL Initrwlock (RWLock *plock){Plock->nreadercount = 0;Plock->hdatalock = CreateSemaphore (null, 1, 1, NULL);if (Plock->hdatalock = = NULL)return FALSE;Plock->hmutex = CreateMutex (null, FALSE, NULL);if (Plock->hmutex = = NULL){CloseHandle (Plock->hdatalock);return FALSE;}return TRUE;}The next question is how to add the error handling function to produce a function called Mywaitforsingleobje

Since the system version has not been upgraded, PHP has been using the system default, resulting in some new things to use the problem.Like composer ... has not been to pay attention to, this time there is a resource on GitHub did not find, think about also must get this thing, nonsense not to say, journal as follows:System version: OS X 10.9.5 php5.4.45 PHP configuration Précis-writers'/private/var/tmp/apache_mod_php/apache_mod_php-87.10~1/php/config

to the document, you need to make the boot.img file again.Use the Mkbootfs tool (Mkbootfs tool is compiled after the Android source code is finished. will create the RAMDisk again at ~/android-src/out/host/linux-x86/bin's own initiative). Can be manipulated using the following commands, for example:#mkbootfs./ramdisk | gzip > ramdisk-new.gzUsing MKBOOTIMG to create boot.img,mkbootimg again can be found in the ~/android-src/out/host/linux-x86/bin folder:#mkbootimg--cmdline ' no_console_suspend=1

This note is mainly used to record the use of various controls under Android to facilitate their own query:PS: Note that the listener for each control is not the same! A mistake can cause a program to crash! Spinner: The most important addition to the control is the array of choices: First, create a arrayadapter by two methods of creating Arrayadapter in the second record; The array is then initialized to a drop-down view through the Setdropdownviewresource () function

downloaded one from NuGet, I didn't know why I couldn't. I compare dishes ...Then use the online introduction of the method to download a ... Input: Install-package swashbuckle.aspnetcore-pre good.Follow the tutorial steps to finally have a problem. What's the problem?? I do not know what the problem, maybe I downloaded the swagger two times there is a conflict it. Rage re-built a webapi, follow the on-line tutorial steps to success. Specifically I will not say, the online tutorial is very deta

Jquery:1. What is jquery: A lightweight framework packaged in JavaScript. So, the bottom of jquery is JavaScript. (javascript+ query, which is a library developed by Auxiliary JavaScript.) ）2. The core concept of jquery: Write Less,do More (write less, do more)------"because the ready-made method has been encapsulated. In general, it's more about calling jquery-related methods.3. jquery is free, open source, and rich in documentation.4. jquery features (effect): 1. You can get element nodes (Lab

One, Windows environment variablesenvironment variable settings: 1. My Computer--right-click Properties-Advanced System variables-environment variables2. Under System variables, create a new variable name: Java_homeVariable Value: Storage disk (example D) D:\Java\jdk1.7.0_60_x64New variable name after OK: CLASSPATH variable values:.; %java_home%\lib\dt.jar;%java_home%\lib\tools.jar; (this variable value takes note of all punctuation marks) 3. Select the environment variable named "path" in s

Javaworld writers guidelines Thank you for your interest in writing for javaworld. We offer the following guidelines to help you with the process of submitting an idea for an article. Note: javaworld does not accept unsolicited manuscriptsIf you have already completed an article and want to submit it to javaworld for review, first send us a query,AlongThe following information. Also note: javaworld does not accept vendor-submitted articlesA Vendor-sub

Popupwindow the raised event that listens to the target object (interactionrequest " {binding Path=employeepopupviewrequest,mode=oneway} > true " Span style= "color: #800000;" > " Centeroverassociatedobject=" true > Popupwindow implements the Iinteractionrequestaware interface and closes Popupwindow through the action delegate member Finishinteraction; PublicAction Finishinteraction {Get;Set; } Publicinotification Notification {Get

A little note on declspec I always feel that the word can not remember, a long time to forget. Today in review DLL time again encountered this word, I feel should be two words abbreviation, but not sure, specially post online help, get two master of help. Here's the answer.The __declspec keyword must prefix the declaration specificationSimple can be understood as "declaration specification".Given the answer is a master, Csdn points ranked 7th, a lot of medals, hehe, see Master.

Git stash Save the current changes Git stash pop pops up the top-of-the-stash Git stash list view all the changes in stash Git stash apply @stash Git stash clear clears all the stash git stash drop @stash Note: Thegit stash pop @stash command will delete the corresponding stash ID from the Stash list after executiongit stash apply @stash command will continue to save the stash IDGit stash operation Précis-writers

-GPG-KEY-redhat-releaseImporting gpg Key 0xfd431d51:userid:red Hat, Inc. (Release KEY 2) L T [emailprotected]> package:redhat-release-server-6server-6.4.0.4.el6.x86_64 (@ anaconda-redhatenterpriselinux-201301301459.x86_64/6.4) From:/etc/pki/rpm-gpg/ Rpm-gpg-key-redhat-releaseimporting GPG Key 0x2fa658e0:userid:red Hat, Inc. (auxiliary key) 　　As you can see from the above information, Yum automatically installs five dependent packages, and if you use RPM, you need to install the five files by err