SmallTalk

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smalltalk建议作文

smalltalk建议作文

smalltalk建议作文英文回答:Small talk is an essential part of social interaction. It helps to establish rapport, build connections, and create a comfortable atmosphere. In English-speaking cultures, small talk is often used as a way to initiate conversations and break the ice. It can be about various topics such as weather, hobbies, current events, or even personal experiences.For example, when meeting someone for the first time, you might start with a simple greeting like "Hi, how are you?" This allows the other person to respond and opens up the opportunity for further conversation. You can then follow up with questions like "What do you do for a living?" or "Have you seen any good movies lately?" These questions help to keep the conversation flowing and show genuine interest in the other person.In addition to initiating conversations, small talk is also useful in maintaining conversations. It can be used to fill in awkward silences or transition between topics. For instance, if there is a lull in the conversation, you can ask about the other person's weekend plans or share an interesting anecdote. This helps to keep the interaction engaging and prevents any discomfort.Furthermore, small talk can also be used as a way to show politeness and respect. In English-speaking cultures, it is common to ask about someone's well-being or offer compliments. For example, you might say "You look great today!" or "How was your day?" These small gestures help to create a positive atmosphere and make the other person feel valued.中文回答:闲聊是社交互动的重要组成部分。

2022届一轮老高考外研英语选修6Module1SmallTalk复习教学课件(双击可编辑)

2022届一轮老高考外研英语选修6Module1SmallTalk复习教学课件(双击可编辑)

□anniversary n. □hostess n. □factual adj. □hospitable adj. □secretive adj. □violate v. □define v. □graciously adv. □function n. □psychologist n. □formula n.
[句式 辨识·运用]
教材原句背诵
句式仿写应用
1.every time 引导的时间状
每次看这张照片,我总会想起我的童年。
语从句。
Every time I look at the picture
,I
Every time I open my always think of my childhood.
mouth, I put my foot in it.
both know has left the room, turn to. or the café or party, etc.
02 重难考点探究
1.lack v.& n.缺乏,缺少;不足
[高考原句·2019·全国卷Ⅰ]Of the nineteen recognized polar bear subpopulations,three are declining, six are stable, one is increasing, and nine lack enough data.
“Where there
教材原句背诵 3.抽象地点名词+where 引
句式仿写应用
导的定语从句。
他们发现陷入了这样一种无法向任何人
Imagine a situation where 求助的境地。
two strangers are talking to They found that they were trapped in such each other after someone they a situation where they had no one to

【词汇讲解】选修6Module1(SmallTalk)词汇重难点解析

【词汇讲解】选修6Module1(SmallTalk)词汇重难点解析

【词汇讲解】选修6 Module 1(Small Talk)词汇重难点解析山东孙玉忠一、重点句型1.Ester replied , “well , anyhow , either you paid too much or you paid too little.”埃斯特回答说,“嗯,无论如何,你不是花钱太多就是花钱就是。

”(p9)either...or... “要么……要么……”。

连接主语时,谓语动词的单复数形式和其相邻的主语部分保持一致。

例如:Either you or he is wrong.不是你错就是他错。

When the girl is happy, she either sings or dances. 那个女孩高兴时,不是唱就是跳。

【拓展】neither…nor…表示“既不……也不”,其对应词为either...or...“要么……要么……”。

例如:Neither he nor I am a teacher. 他不是大夫,我也不是。

Neither I nor he goes to the cinema.我和他两人谁也没去看电影。

2.It is estimated that 80% of all conversation in English is small talk.据估计,在英语的对话中80%是闲聊。

(p13)It is estimated that 据估计……,例如:It is estimated that over one million Americans now live below the poverty line. 据估计,超过一百万美国人现在生活在贫困线之下。

【拓展】It is said (reported,estimated, learned...) that ... 该句型中的it 仍是形式主语,真正主语是that 引导的主语从句,该结构常译为“据说(据报道,估计,据悉……)”。

Smalltalk语言

Smalltalk语言
前述的所有Smalltalk系统都是在特殊的硬件上实现的,直到1977-78年,Bruce Horn和Ted Kaehler把 Smalltalk-76移植到由Intel 8086处理器和自定显示器所组成的硬件环境(被称为NoteTaker)上。虽然这种硬 件环境只生产了10台,但是它证明了在通常的处理器上实现Smalltalk的可能性。
Smalltalk的历史
Smalltalk-76
Smalltalk-71与72
Smalltalk-80
Smalltalk-71与-72
在1971年到1975年之间,艾伦·凯在Xerox PARC的小组设计并实现了第一个真正的Smalltalk语言系统, 编译器由Dan Ingalls负责主要实现。这个系统具有以下几个技术创新:
开发环境的革新相当迅速。虽然当时的位图显示器十分昂贵,但是艾伦·凯却说服了PARC让他使用这些位图 显示器,这使得艾伦·凯和他的小组能够实现不同大小和字体的文字,使用多窗口环境,以及一些对图像处理的 高端支持。
Smalltalk-76
1975-76年间,艾伦·凯小组认识到应当对执行效率和规模进行优化。于是他们在许多重要方面重新设计 了Smalltalk系统,在语言上:
谢谢观看
Smalltalk语言
IT专业术语
目录
01 什么是Smalltalk
03 Smalltalk的历史
02 Smalltalk中的对象 04 程序实例
基本信息
Smalltalk,被公认为历史上第二个面向对象的程序设计语言,和第一个真正的集成开发环境(IDE)。 Smalltalk由艾伦·凯,Dan Ingalls,Ted Kaehler,Adele Goldberg等于70年代初在Xerox PARC开发。

艾伦凯 smalltalk 语言发明者

艾伦凯 smalltalk 语言发明者

艾伦·凯与Smalltalk语言您知道左面挂着图灵奖奖章的人是谁吗?他是世界上第二个面向对象语言——Smalltalk的发明人艾伦.凯(Alan.Kay),1972年,艾伦等人在Flex系统的基础上开发成功Smalltalk语言,为此,Alan.Kay被誉为Smalltalk语言之父。

2003年,Alan.Key因为在面向对象程序设计上的杰出贡献,获得了有计算机界的诺贝尔奖之称的图灵奖(ACM Turing Award)。

艾伦.凯不是一位公众人物,但在计算机界,尤其是在技术圈子内,他是能让大家都心服口服屈指可数的大师之一。

成为硅谷的又一位亿万富翁或让他当麻省理工学院院长的难得机遇,都无法激起他的兴奋,但他却有足够的耐性与一群8岁左右的孩子一起玩电脑。

他平生最大的乐趣就是搞小发明。

在计算机界,阿伦·凯可算得上是一个不可多得的全才,他不仅是Smalltalk面向对象编程环境语言的发明人之一,也是面向对象编程思想的创始人之一,同时,他还是笔记本电脑最早的构想者和现代Windows的图形用户接口GUI的建筑师。

图艾伦.凯近年来有一句话挺流行:“预测未来的最好办法,就是把它创造出来。

”不少人误以为此言出自尼葛洛庞帝(Negroponte)之口,实际上,这句话是阿伦·凯的名言。

有很多人说布兰德是第一个使用个人计算机PC一词的人,但布兰德说自己也是顺手牵羊,最早提出“PC”概念的就是阿伦·凯。

在20世纪70年代的一份备忘录上,阿伦·凯还正确地预言到,“20世纪90年代将有成百万的个人计算机,而且都将连接到全球公用的信息设施上”这不正是今天的互联网吗?艾伦.凯,1940年5月17日生于美国麻萨诸塞州的Springfield,但是出生后不久艾伦全家即搬迁到澳大利亚。

在风光宜人的澳大利亚黄金海岸,他度过了自己的儿童时光。

可是好景不长,二战爆发,艾伦全家又重返美国。

“神童”艾伦·凯艾伦聪明过人,是个超智商的“神童”。

Smalltalk语言的面向对象特性

Smalltalk语言的面向对象特性

Smalltalk语言的面向对象特性Smalltalk是一种面向对象的编程语言,其独特而强大的面向对象特性使其成为一种流行的编程语言之一。

本文将介绍Smalltalk语言的一些重要的面向对象特性,并探讨它们对编程的好处。

1. 类和对象在Smalltalk中,一切都是对象。

对象是类的实例,类是对象的模板。

通过定义类,我们可以创建许多对象,每个对象都有自己的状态和行为。

类定义了对象的属性(即实例变量)和方法(即消息的响应方式)。

通过创建对象并发送消息给对象,我们可以访问和修改对象的状态。

2. 封装封装是面向对象编程的核心原则之一,也是Smalltalk中的基本特性。

封装将数据和相关的操作封装在一个类中,通过隐藏实现细节来保护数据的完整性。

这使得代码更加模块化,并提供了更好的可维护性和可重用性。

在Smalltalk中,我们可以使用访问器和修改器方法来控制对对象内部状态的访问。

3. 继承继承是面向对象编程的另一个重要特性,它允许我们通过创建子类来扩展现有类的功能。

在Smalltalk中,通过创建一个子类,我们可以继承父类的属性和方法,并可以在子类中添加新的属性和方法。

继承提供了代码重用的机制,使得我们可以通过修改父类来改变所有继承自它的子类的行为。

4. 多态性多态性是指不同的对象以不同的方式响应相同的消息。

在Smalltalk 中,多态性是由继承和动态绑定实现的。

不同的子类可以响应相同的消息,但以不同的方式执行操作。

这使得我们可以编写更加通用和灵活的代码,可以根据不同的对象类型来调用相应的方法。

5. 消息传递在Smalltalk中,对象之间通过发送消息来进行通信。

对象接收消息后,会根据消息的内容去执行相应的方法。

消息传递机制使得对象之间的交互更加松散,对象只需要知道如何响应特定的消息,而不需要知道消息的发送者是谁。

这增加了代码的灵活性和可维护性。

6. 动态性Smalltalk是一种动态语言,它具有高度的灵活性和动态性。

smalltalk作文

smalltalk作文

smalltalk作文英文回答:Small talk is a common form of conversation that involves casual and light-hearted topics. It is often used to initiate and maintain social connections, and it plays an important role in building relationships. Personally, I find small talk to be a valuable tool in social interactions.One reason why small talk is important is that it helps to break the ice and create a comfortable atmosphere. When meeting someone for the first time or in a new social setting, engaging in small talk can help to establish a connection and make both parties feel more at ease. For example, when attending a networking event, I might start a conversation with a fellow attendee by commenting on the venue or asking about their profession. This small talk can lead to further discussions and potentially even a business partnership.Another benefit of small talk is that it allows peopleto find common ground and shared interests. By discussing topics such as hobbies, sports, or current events, individuals can discover shared experiences or passions. This can help to foster a sense of camaraderie and strengthen relationships. For instance, if I meet someone who shares my love for hiking, we can exchange storiesabout our favorite trails and even plan a hiking trip together.Furthermore, small talk can also serve as a way to show politeness and respect. In many cultures, engaging in small talk is seen as a sign of good manners and social etiquette. By showing interest in the other person and engaging in polite conversation, we demonstrate that we value their presence and are willing to invest time and effort ingetting to know them better. This can lead to deeper and more meaningful connections in the long run. For example, when attending a social gathering, I might engage in small talk with the host or hostess to express my gratitude for their invitation and to make them feel appreciated.中文回答:Small talk是一种常见的轻松愉快的对话形式。

【词汇讲解】Module1SmallTalk知识拓展

【词汇讲解】Module1SmallTalk知识拓展

【词汇讲解】Module 1 Small Talk知识拓展1.Do you want to make more friends but lack the confidence to talk to people you don’t know?你是否想结交更多的朋友但又缺乏与陌生人交谈的信心?lack.1)vt. 缺少…, 没有…(通常不用于被动语态)eg. He lacks common sense.他缺乏常识.She lacks the money to buy new shoes.她没钱买新鞋。

2)vi. 作为一个不及物动词,用于“缺乏或缺少”之意的lack主要和in一起用于现在分词中.Eg. You will not be lacking in support from me.你会得到我的帮助。

当意思是“需要某物”时,它经常与for连用.Eg. They are so rich that they lack for nothing.他们非常富裕, 没有欠缺任何东西.3) n. (常与of连用)缺乏;需要eg. There is no lack of vegetable.蔬菜不缺。

The lack of rain aggravated the serious lack of food."由于干旱少雨,缺粮问题更加严重。

"2.It helps if you do a little advance planning.要是预先作些准备, 将会对你有所帮助.advance1)adj. 预先的an advance ticket 预售票an advance payment. 预付款项2) vt, viadvanced, advancing(1) 前进;增进eg. The troops advanced.部队向前开进。

The Allied troops are advancing on the camp of the enemy.盟军正在向敌军营地挺进。

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Keywords and Messages
• M e th o d s (m e s s a g e s ) - g e n e ra l s tru c tu re
- in s tru c tio n s e n d w ith . (e x c e p t fo r la s t) - im m e d ia te re tu rn w ith ^<va lue > - m e s s a g e 's s e le c to r is
Keywords and Messages
• U n a ry m e s s a g e s - n o p a ra m e te rs - fo r e x a m p le : som e O bje ct clone - d e fin itio n :
• B in a ry o p e ra to rs - th e re a re n o u n a ry o p e ra to rs ! - ke y w o rd s : sp e c ia l ch a ra c te rs lik e + - * / , - e x c e p tio n s : e .g ., . ;
Smalltalk
An Introduction to Smalltalk There's More to OO than Java...
computer science and technology(soft)
李爱东
Why Smalltalk ?
• "W h e n I in v e n te d th e te rm 'o b je c to rie n te d ' I d id n o t h a v e C ++ in m in d ." -- A la n K a y • P u re o b je c t-o rie n te d la n g u a g e - le a rn co n c e p ts , n o t sy n ta x : v e ry e a s y to le a rn - G C , n o m e m o ry m a n a g e m e n t, n o p o in te rs • L o o k a t a n d m a n ip u la te o b je c ts in re a l tim e • H ig h p ro d u c tiv ity b y sh o rt ro u n d -trip
The history of Smalltalk
• S m a llta lk -80 - 2 g o a ls : h a rd w a re a n d co m m u n ity - la n g u a g e sta n d a rd - m a s s iv e ly a d o p ts M V C - fo re ru n n e r o f to d a y 's G U Is • M e ta -c irc u la r im p le m e n ta tio n - co m p ile r/in te rp re te r im p le m e n te d in S m a llta lk - so u rc e co d e is a lw a y s th e re - virtu a l m a c h in e vs . v irtu a l
#th is Is A S y m b o l #('th is ' 'is ' 'a n ' 'a rra y ' 'w ith ' 7 'ele m e n ts ')
Keywords and Messages
• K e y w o rd s a re p e rv a s iv e
Keywords and Messages
Keywords and Messages
• A rith m e tic s - n u m b e rs a re o b je c ts , e v e n lite ra ls ! - e x p re s s io n 4 sqrt re sults in 2.0 - e x p re s s io n 1 + 2 * 3 re sults in 9 (ye s, inde e d) - e x p re s s io n 1 + (2 * 3) re sults in 7
Smalltalk – the Language
"P u re " o b je c t-o rie n te d la n g u a g e - a b s o lu te ly e v e ry th in g is a n o b je c t F e a tu re s - s in g le in h e rita n c e - d y n a m ic a lly ty p e d - p o w e rfu l lib ra ry a n d m e ta -le v e l - s tric t c la s s h ie ra rc h y (s u p e rc la s s : O bje ct)
Smalltalk – the Language
• L e x ic a l d e ta ils (词汇详情) - co m m e n ts : d o u b le q u o te s - ch a ra c te rs : $<cha r> - strin g s : sin g le q u o te s - sy m b o ls : #<sym > - a rra y s : #(<ele m > <e le m > ...) • O p e ra to rs - a s s ig n m e n t := "th is is a co m m e n t" - e q u a lity = $x 'th is is a strin g ' - id e n tity ==
• R o ta tio n m e th o d so u rc e co d e

A lte rn a tiv e s : - rota te Around: a V e ctor by: a ngle - rota te : a ngle a nd: a V e ctor (ba d style ) - ke y w o rd s te ll th e o rd e r o f p a ra m e te rs
Keywords and Messages
•M e s s a g e se n d in g se m a n tic s - m e s s a g e s a re se n t to o b je c ts - firs t e le m e n t in a n e x p re s s io n is a lw a y s a n o b je c t - re s u lt o f a n e x p re s s io n is a n o b je c t, to o - e v a lu a tio n : le ft to rig h t •N o im p lic it se n d in g to se lf - Ja v a : - S m a llta lk : se lf m y M e th o d
Conditions
C o n d itio n s - th e re a re a c tu a lly n o co n tro l stru c tu re s -a ll "co n tro l stru c tu re s " a re m e s s a g e s
M e s s a g e s th a t ca n b e se n t to Boole a n obje cts - ifT rue :, ifF a lse : - ifT rue :ifF a lse :, ifF a lse :ifT rue : - co n d itio n a l fu n c tio n a lity e n c a p s u la te d in b lo c k s
The history of Smalltalk
• 1968: S IM U L A - firs t "o b je c t-o rie n te d " la n g u a g e • 1971: D y n a b o o k (A la n K a y ) - e a s y -to -u s e co m p u te r fo r anyone - b itm a p p e d d is p la y (位图显示), p o in tin g d e v ic g e (外部存储器) - p ro g ra m m in g ~ cre a tin g sim u la tio n s - S m a llta lk -71
Conditions
•H o w a re co n d itio n a ls im p le m e n te d ? - cla s s Boole a n is a bstra ct - cla s s e s T rue a nd F a lse inhe rit from Boole a n e a c h h a s o n e in s ta n c e : true re sp. fa lse -im p le m e n ta tio n o f ifT rue : in cla ss T rue -im p le m e n ta tio n o f ifF a lse : in cla ss T rue
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