imported>人人生來平等：// Edit via Wikiplus

2024-05-18T16:56:50Z

// Edit via Wikiplus

新页面

{{Infobox programming language
| name = Snap!语言
| logo = [[File:Snap!.svg|180px]]
| paradigm = [[面向对象编程]], [[事件驱动编程]]
| year = 2011年
| designer = [[布萊恩·哈維]]和[https://github.com/jmoenig/ Jens Mönig]
| developer = [https://github.com/jmoenig/ Jens Mönig]
| latest release version = 7.0.2
| latest release date = {{Start date and age|2021|12|21}} <ref>{{cite web|url=https://github.com/jmoenig/Snap/releases|title=jmoenig/Snap|website=GitHub|access-date=3 January 2022|archive-date=2022-04-21|archive-url=https://web.archive.org/web/20220421083759/https://github.com/jmoenig/Snap/releases}}</ref>
| typing = [[动态类型]]
| implementations =
| programming language = [[JavaScript]]
| dialects =
| influenced_by = [[Scratch语言]]
| influenced =
| operating_system =
| license = [[Affero General Public License|AGPL]]
| website = [http://snap.berkeley.edu/ snap.berkeley.edu/] [http://byob.berkeley.edu/ byob.berkeley.edu/]
| file_ext = .xml
}}

'''Snap!''' 是一款用[[JavaScript]]编写的，在浏览器裡运行的图形化编程语言，旨在赋予学生创作交互式故事，动画，游戏等作品，学习数学和计算概念。Snap!由[[Scratch语言]]衍生，包含和扩展了Scratch的功能。

Snap! 不用在本地设备上安装任何部件，只需网络浏览器即可。

==历史==
Snap! 4.0和前身[https://snap.berkeley.edu/old_site/old-byob.html BYOB]{{Wayback|url=https://snap.berkeley.edu/old_site/old-byob.html |date=20200202090607 }}由来自[[加州伯克利大学]]的Jens Mönig开发，可以运行在[[Microsoft Windows|Windows]]、[[Mac OS X]]或[[Linux]]系统<ref>{{cite web|url=http://scratch.mit.edu/users/Jens|title=Scratch - Imagine, Program, Share|website=scratch.mit.edu|accessdate=21 May 2017|archive-date=2014-02-18|archive-url=https://web.archive.org/web/20140218173026/http://scratch.mit.edu/users/Jens/|dead-url=no}}</ref><ref>{{Cite web |url=http://www.chirp.scratchr.org/blog/?m=201105 |title=Mönig's blog post announcing BYOB as bringing protypal inheritance to Scratch |accessdate=2015-03-27 |archive-date=2013-12-06 |archive-url=https://web.archive.org/web/20131206131246/http://www.chirp.scratchr.org/blog/?m=201105 |dead-url=no }}</ref>；[[布莱恩·哈维]]提供创意和文档<ref>{{cite web|url=https://people.eecs.berkeley.edu/~bh/|title=HomePage for Brian Harvey (bh@cs.Berkeley.EDU)|website=people.eecs.berkeley.edu/~bh/|accessdate=19 January 2019|archive-date=2019-04-03|archive-url=https://web.archive.org/web/20190403045124/https://people.eecs.berkeley.edu/~bh/|dead-url=no}}</ref>。<ref>{{Cite web |url=http://scratch.mit.edu/users/bharvey |title=Brian Harvey user contributions page |accessdate=2015-03-27 |archive-date=2014-02-16 |archive-url=https://web.archive.org/web/20140216224233/http://scratch.mit.edu/users/bharvey/ |dead-url=no }}</ref><ref>{{Cite web |url=http://www.eecs.berkeley.edu/~bh/ |title=Brian Harvey's homepage |accessdate=2015-03-27 |archive-date=2014-01-23 |archive-url=https://web.archive.org/web/20140123101750/http://www.eecs.berkeley.edu/~bh/ |dead-url=no }}</ref> 。加州伯克利大学在面向非计算机专业学生的名为“计算的美和乐趣”的课程上使用Snap!。<ref>{{Cite web |url=http://inst.eecs.berkeley.edu/~cs10/fa11/ |title=The Beauty and Joy of Computing course homepage |accessdate=2015-03-27 |archive-date=2014-01-23 |archive-url=https://web.archive.org/web/20140123111318/http://inst.eecs.berkeley.edu/~cs10/fa11/ |dead-url=no }}</ref>

==运行平台==
Snap! 4.0 可运行在[[Apple iOS]]、[[Mac OS X]]、[[Microsoft Windows|Windows]]和[[Linux]] 上，用[[Javascript]]编写，使用[[HTML5]] [[Canvas]] API令其具有良好的跨平台性。

对比之下，[[Scratch]] 2.0用[[ActionScript]]编写，不能在苹果公司的[[iOS]]系统上运行。

==用户界面==
[[File:Snap 4.0 Default screen.png|thumb|left|340px|Snap 4.0 开发环境]]
屏幕布局和Scratch2.0之前的版本一致。部件区域在左面，代码区域在中间，右上部是运行区域，右下部罗列动画人物缩微。

==特性==
区别于Scratch的最重要的特性为：
*[[高阶函数]]，数学上称为"[[Λ演算]]"
*嵌套列表，例如列表的列表
*角色嵌套
*Snap!代码可转换为其他主流程序语言，如Python, JavaScript和C等.

==参考==
{{reflist|2}}

== 外部链接 ==
* {{official website|http://snap.berkeley.edu/}}
* [https://github.com/jmoenig/Snap--Build-Your-Own-Blocks source code]{{Wayback|url=https://github.com/jmoenig/Snap--Build-Your-Own-Blocks |date=20160212071919 }}
* CNET Download.com and CNET TechTracker's [http://download.cnet.com/BYOB-Build-Your-Own-Blocks/3000-20415_4-75629082.html BYOB for Mac]{{Wayback|url=http://download.cnet.com/BYOB-Build-Your-Own-Blocks/3000-20415_4-75629082.html |date=20150905101955 }} download page
* CNET Download.com and CNET TechTracker's [http://download.cnet.com/BYOB-Build-Your-Own-Blocks/3000-20415_4-75629466.html BYOB for Windows]{{Wayback|url=http://download.cnet.com/BYOB-Build-Your-Own-Blocks/3000-20415_4-75629466.html |date=20150405194327 }} download page
{{程序设计语言}}
[[Category:視覺化程式設計語言]]
[[Category:Smalltalk编程语言家族]]

Snap! - 版本历史

imported>人人生來平等：​// Edit via Wikiplus

imported>人人生來平等：// Edit via Wikiplus