Codecademy learning logging 1, codecademy learning Logging
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I want to learn programming and start my self-study career with a closed door.
Some time ago I bought a heavy "Java from entry to entry ". It may be a stranger to the code and computer programming environment. In addition, the pure little white beginners will encounter Java,
After turning over more than 50 pages, I was very
############################################################################### Codecademy Python 5.5# Define A function factorial that takes an integer x as input.# Calculate and return the factorial of that number.# def digit_sum (x):# mul = 1# for I in Range (1,x+1):# mul = I*mul# Print (MUL)# digit_sum (6)############################################################################### Codecademy Python 5
] = ="X"):#if it has been populated, the x description is a duplicate value Print "You guessed that one already." Else: Print "You missed my battleship!"Board[guess_row][guess_col]="X" #the wrong value is filled with x Print(turn+1) ifTurn==3: Print "Game over"Print_board (board)Codecademy the nineth unit of the small game, although passed, but feel there is a mishap, need to adjust later, for exa
the complex, very good understanding. Codecademy the exercises above are not according to the project, a bit like a module, but our goal is to use Python to support data analysis work, not as a Python programmer.The basic step must be the code, one step at a pace, or a indentation will be able to dry people down.Objective to find the average grade of a class and the corresponding result type.#字典的定义方式Lloyd = { "name":"Lloyd", "Homework": [90.0,9
The element lets you add images to a Web page. element has required attribute called SRC, which was similar to the href. The values of SRC must be the URL of the image. also need a/to self-closing element. exmaple like this:Also, the ALT attribute is applied specifically to the element as a description.Why add alt attibute?1. If an image fails-load on a Web page, a user can Ouse over the area originally intended for the image and read a BRI EF description of the image.2.Visually impaired user
1 defAnti_vowel (text):2out=[]3mystring=list (text)4 forIinchmystring:5 ifI not inch["a","e","I","o","u","A","E","I","O","U"]:6 out.append (i)7 Print("". Join (out))8 9 TenTesting=input ("Please enter a string:") OneAnti_vowel (testing)First use the Remove method, directly delete the vowel in the list, but when debugging found that the position of the list element changes after the deletion of letters, it may be missed when traversing again, then use the Append method, the lette
---syntax---1. Booleans:true and False2. Assin and reassign value to Variable:spam =33. Whitespace:indent (indentation), blank spaces of four blank spaces4. Interpreter (interpretation): Run your code line by line, and check for any errors5. Single line comment:use the # sign6. Multi-line comment:starting each line with #, or use a set of triple quotation marks "" "..." "" "7. Exponent (exponentiation): Use * *, like this 10**28. Modulo:get the reminder from division If you use decimal, you shou
In order to learn programming, many people bought a bunch of related books, and participated in a lot of online courses, and even spent hundreds of yuan to buy a set of teaching CD-ROM, in the end will not be programmed, very worthless.
Codecademy is a newly launched web site that provides users with a new way to learn about programming. It is a web-based interactive programming tutorial that helps users understand some of the basics of JavaScript an
$http Services in 1.angular:$http. Get (url,{params:{parameter}}). Success (). Error ();$http. Post (url,{params:{parameter}}). Success (). Error ();$http. JSONP (url,{params:{wd: ', CB: ' Json_callback '}}). Success (). Error ();Note that the CB in the JSONP angular can only use Json_callbac$watch (who, what to do, false);Who is talking about who to listen to, what to do refers to the function that will be
Using angular-cli to publish the Angular application of i18n language, angular-clii18n
Add i18n to the html tag of the template
Use the ng command to generate the message. xlf file in xlf format
$ ng xi18n --output-path src/i18n
After the command is executed, the src/i18n/messages. xlf file is generated.
Copy message. xlf, message. en. xlf (English version) mes
Angular Study Notes: angular's $ filter service analysis and angular Study Notes
First, we will introduce the $ filter service:
1. $ filter is a dedicated service for formatting data;
2. AngularJS has eight built-in filters: currency, date, filter, json, limitTo, lowercase, uppercase, number, and orderBy;
3. Filters can be nested and separated by the pipeline symbol "|" (a bit like linux );
4. The filter ca
Detailed description of Angular 2 Table Control and angular Table Control
Front-end frameworks have been a hot topic in recent years, especially Angular 2 has many fans. After Angular 2 was officially released in September 2016, a large number of fans began to invest in Angular
When it comes to project architecture, there are many things to consider:
Convenient. For example, using jquery is a lot easier than not using jquery, so most websites have access to similar libraries;
Performance optimization. Including loading speed, rendering efficiency;
Code management. Large-scale projects need to consider the modularity of the code, low-coupling between the high-cohesion, for the purpose of team cooperation efficiency;
Scalability. That's needless to s
Original source: https://my.oschina.net/blogshi/blog/280400
Absrtact: Voluminous wrote a lot of the recent construction projects of some experience, for the construction of angular project is really not in harmony with the previous front-end framework, so it is hereby recorded to share to everyone, and hope to be helpful.
Objective
Contact Angular also has a small half month, although not hard to toss, but
What are the eight main construction blocks of Angular 2 applications and angular application structures?
Previous words: I recently read quickstart on the official website during Angular 2 and National Day, and wrote an article, just a hello world demo. Later, I continued to read a project tutorial of it. At the beginning, I was able to keep up with it, and it w
The upload class is used in the service layer. Notice it has a constructorfilefor attribute, and which has a type ofFile. This would allows us to initialize new uploads with a JavaScript File object. You'll see what's important in the next step.
export class Upload {
$key: string;
file:File;
name:string;
url:string;
progress:number;
createdAt: Date = new Date();
constructor(file:File) { this.file = file;
}
}
Then build the upload service, which can inject to compo
How to Use Angular CLI to generate an Angular 5 Project tutorial, angularcli
If you are using angular but do not make good use of angular cli, you can refer to this article.
Angular CLI official site: https://github.com/angular/
The angular team recently released the official version of angular 1.5, which implemented a major upgrade that still uses 1. The X-version developer will be able to easily transition to angular 2 development.
"The purpose of this release is to" improve the angular 2 upgrade path, "Pete Bacon Darwin wrote in a blog pos
Upgrade angular-cli: 1.0.0-beta.28.3 to @ angular/cli: 1.0.0,
Now Angular CLI replaces angular-cli with @ angular/cli in npm, and it only supports Node6.9.0 or a later version, npm 3 or a later version. Therefore, upgrade node and npm before upgrading
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