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  • 初中英语语法——形容词与副词(二)比较的用法语法解释1、形容词与副词比较级和最高级的规则变化单音节词与部分双音节词:(1)一般情况加-er,-estlong-longer-longeststrong-stronger-strongestclean-cleaner-...
    初中英语语法——

    形容词与副词(二)

    比较的用法

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    • 语法解释

    1、形容词与副词比较级和最高级的规则变化

    • 单音节词与部分双音节词:

    (1)一般情况加-er,-est

    long-longer-longest 

    strong-stronger-strongest

    clean-cleaner-cleanest

    (2)以不发音的e结尾的词,加-r,-st

    nice-nicer -nicest  

    wide-wider-widest

    nice-nicer-nicest

    (3)重读闭音节(辅+元+辅)结构结尾的词,双写末尾字母再加-er,-est

    big-bigger-biggest

    thin-thinner-thinnest

    fat-fatter-fattest

    (4)以辅音字母加y结尾的词,改y为i再加-er,-est

    easy-easier-easiest 

    friendly-friendlier-friendliest 

    heavy-heavier-heaviest

    busy-busier-busiest

    happy-happier-happiest

    funny-funnier-funniest

    • 部分双音节词及多音节词

    在词前加more,most

    serious-more serious-most serious

    slowly-more slowly-most slowly

    beautiful-more beautiful-most beautiful

    comfortably-more comfortably-most comfortably

    注意: 

    simple、clever两种变形方式均可。

    2、形容词与副词比较级和最高级的不规则变化

    (1)常见不规则变化形式

    good(好)-better-best

    well(好地;身体健康的)-better-best

    bad(坏的)-worse-worst

    badly(坏地)-worse-worst

    ill(有病的)-worse-worst

    little(很少的;很少地)-less-least

    many(多)much-more-most

    much(多)much-more-most

    far(远)-farther/further-farthest/furthest

    old(老;旧)-older/elder-oldest/eldest

    (2)older/oldest与elder/eldest

    older/oldest既可用于人也可用于物,也可用于比较等级,elder/eldest则只用于指人,不用于指物,且不用于比较句型,通常置于名词前作定语,不作表语。“elder”还可以作名词表示“长者”。如:

    This is the oldest temple in Taiwan.  

    这是台湾最老的寺庙。

    My eldest aunt is three years older than my mother.  

    我最大的姨妈比我妈妈大三岁。

    This is my elder brother and those are all our elders.  

    这是我哥哥,那些都是我们的长辈。

    (3)farther/farthest与further/furthest

    表示距离时,四个词都可用,“further”还可以表示“更进一步;(意义)更深远;更多;此外”等。“further”作动词表示“促进;推进”。如:

    I can throw much farther/further than you.  

    我可以比你扔得更远。

    I have nothing further to say.  

    我没有更多的要讲了。

    We’ll further discuss it. 

    我们会进一步讨论它。

    Her support furthered my career. 

    她的支持促进了我的事业。

    3、原级比较

    (1)as+原级+as 表示“和…一样…”。

    English is as interesting as Chinese.  

    英语和汉语一样有趣。

    (4)not as/so+原级+as表示“和…不一样…/不如…”。

    The book isn’t as new as that one.  

    这本书不如那本书新。

    She didn’t sing so well that night as she usually does.  

    她那晚唱歌唱得不如平时好。

    (3)有时该结构可以被almost,just,nothing,like,exactly,not quite,twice,30 percent等修饰,注意这些修饰词必须置于第一个as之前,而不能置于其后。

    The dining-room is twice as big as the kitchen.

    餐厅是厨房的两倍大。

    At best we can do only half as much as last year.

    我们最多能完成去年工作量的一半。

    (4)原级比较结构中的形容词有时还可修饰另一名词,但这个名词应带有不定冠词。

    She is as good a cook as her mother.=She is a cook as good as her mother.

    她和她妈妈一样是一位好厨师。

    4、比较级用法

    (1)A+be/动词+比较级+than B 表示“A比B更…”。

    The lion is stronger than the antelope. 狮子比羚羊强壮。

    We need to do better than others. 我们需要比别人做得更好。

    (2)the+比较级+of the two(+名词)表示“两者中较…的那一个”。

    It is the longer of the two streets.

    这是两条街道中比较长的那一条。

    (3)“比较级+and+比较级/more and more+原级”表示“越来越…”。more and more本身也可用于修饰动词,介词。

    Winter comes and the weather gets colder and colder.

    冬天到了,天变得越冷越冷。

    Our school is more and more beautiful.

    我们的学校越来越美丽了。

    The little girl is growing to be more and more like her mother.

    这个小姑娘长得越来越像她妈妈了。

    (4)“the+比较级...,the+比较级”表示“越…,就越…”。

    The harder you work, the more you will get.

    你工作越努力,你得到的就会越多。

    (5)含有or的选择疑问句,要用比较级。

    Which language is more difficult, Chinese or English?

    哪一种语言更难,中文还是英语?

    (6)形容词/副词比较级前可用表示程度的副词修饰,如a little,a bit,a great deal,a lot,much,even,still,far,rather,any等。例如:much +比较级,表示“…得多”。very,quite一般只能修饰原级,不能修饰比较级。

    China is much bigger than Japan.

    中国比日本大得多。

    (7)“no+比较级+than”结构,通常表示对比较的两个对象同时进行否定,表示“与…一样不”。如no better than=as bad as 与…一样不好(即一样坏);no earlier than=as late as 与…一样不早(即一样迟);no more than表示“仅仅。只不过”。

    You are no more careful than he is.

    你和他一样不仔细。

    A half truth is often no better than a lie.

    半真半假的话常常跟谎言一样糟。

    I have no more than five yuan in my pocket.

    我口袋里仅有五块钱。

    This test takes no more than thirty minutes.

    这个测验需时不超过30分钟。

    The pub was no more than half full.

    该酒吧的上座率最多不超过五成。

    (8)表示倍数

    • 倍数+as+形容词/副词原级+as

    This ruler is three times as long as that one.

    这把尺子是那把尺子的三倍长。

    • 倍数+形容词/副词比较级+than

    This ruler is three times longer than that one.

    这把尺子是那把尺子的三倍长。

    • 倍数+the size/length/weight...+of+比较的对象

    This ruler is three times the length of that one.

    这把尺子是那把尺子的三倍长。

    • 倍数+what引导从句

    He eat three times what I eat.

    他的食量是我的三倍。

    (9)相关短语

    • more or less表示“几乎,差不多,大约,或多或少”。

    The work is more or less finished.

    工作基本上完成了。

    It’s an hour’s journey, more or less.

    大约有一个钟头的路程。

    • sooner or later表示“迟早,早晚,总有一天”。

    You should tell her, because she’ll find out sooner or later.

    你应该告诉她,因为她迟早会发觉的。

    • what's more表示“此外,还有,更有甚者”。

    She says we could use her car, and what;s more, she’ll pay for the petrol.

    她说我们可以用她的车,而且她还愿付汽油费。

    5、最高级用法

    (1)the+最高级(+名词)+表示范围的短语或从句

    Jack is the tallest boy in our class.

    杰克是我们班上最高的男生。

    Linda draws (the) best in her class.

    琳达班上她画得最好。

    (2)“one of the+最高级+名词复数”表示“最...之一”。

    China is one of the oldest countries in the world.

    中国是世界上最古老的国家之一。

    (3)形容词/副词最高级前面可以加序数词,表示“第几最…”。

    The Yellow River is the second longest river in China.

    黄河是中国第二长河。

    (4)比较级表示最高级含义

    • 比较级+than+any other+可数名词单数

    She is taller than any other girl in her class.

    她是他们班个子最高的女生。

    • 比较级+than+all other+可数名词复数

    This bag is more expensive than all other bags in the shop.

    这个包是这家店里最贵的。

    • 比较级+than+anything else/anyone else

    Life is more valuable than anything else.

    生命是最宝贵的东西。

    • 比较级与否定词连用

    I have never heard a better voice than yours.

    你的嗓音是我听过的最好的嗓音。

    (5)表示在三者或三者以上的人或物中进行选择时,要用最高级。

    Which subject do you learn best, geography, physics or Chinese?

    你哪一个学科学得最好,地理,物理还是语文?

    (6)最高级前无须加the的情况

    • 副词最高级作状语时,the通常可省略。

    He runs (the) fastest in his class.

    他在他们班是跑得最快的。

    It was Lily who do it most effectively.

    最有效完成的人是Lily。

    • 最高级前有序数词、物主代词、指示代词或名词所有格等限定词修饰时,无须加the

    My oldest daughter is 16 years old.

    我最大的女儿十六岁。

    Hainan is China’s second largest island.

    海南是中国第二大岛。

    • 多个形容词最高级共同修饰同一名词时,第二个形容词最高级前不加the。

    He is the youngest and tallest boy in his class.

    他是他班里最小也是最高的男孩。

    • 最高级用于加强语气,表“非常”时,前面不加the。但形容词最高级作单数名词的定语时,可用不定冠词a/an。

    That book is most interesting.

    那本书非常有趣。

    The girl looks prettiest in white.

    这个女孩穿白衣服最好看。

    She is the candidate most likely to be elected.

    她是最有可能入选的候选人。

    Spring is a best season.

    春天是个非常好的季节

    • 作宾语补足语的形容词最高级前不加the。

    I found it most difficult to get to sleep.

    我发现入睡是最难的。

    • 形容词最高级在句中作表语而比较范围又不明确时,最高级前不用the。

    They are happiest on Saturdays.

    他们在星期六最快乐.

    • 在一些固定用法中

    With best wishes for you.

    向你致以最美好的祝愿.

    • 练习

    一、写出下列单词的比较级和最高级

    serious _________________

    friendly _________________

    far _________________

    badly_________________

    hard  _________________

    little  _________________

    heavy  _________________

    heavily _________________

    cheap  _________________

    much  _________________

    safe  _________________

    tired  _________________

    outgoing  _________________

    good  _________________

    thin  _________________

    comfortable  _________________

    many _________________

    slowly _________________

    funny _________________

    quiet _________________

    二、单项选择

    1.—Which of the two cars will you buy?

    —The ______ one.I don’t have much money.

    A.cheap  B.expensive      

    C.cheaper  D.more expensive

    2.—Remember this, children.______ careful you are, ______mistakes you will make.

    —Yes,Miss Gao.

    A.The more;the fewer      

    B.The more;the few

    C.The more;the less        

    D.The much;the fewer

    3.—Mum,could you buy me a dress like this?

    —Of course.We can buy _____ one than this,but ____ it.

    A.a better;better than              

    B.a popular;as good as

    C.a more popular;not as good as     

    D.a cheaper;as good as

    4.The actress is already 50,but she looks _____ than she really is.

    A.young   

    B.more young      

    C.more younger  

    D.much younger

    5.—Tom,what do you think of the school?

    —Oh,no other school is ____ in the city. It’s ____ one.

    A.better;a better     

    B.the best;the best     

    C.better;the best     

    D.the best;a better

    6.Now,blogs are ______ traditional diaries among young people.Everyone in my class has a blog.

    A.very popular          

    B.as popular as

    C.not so popular as       

    D.much more popular than

    7.—What do you think of the film you saw yesterday?

    —Oh! It’s one of _______ films I’ve ever seen.

    A.interesting     

    B.more interesting     

    C.most interesting     

    D.the most interesting

    8.—Peter is ____ than you,right?

    —Yes,but he is____ runner in our class.

    A.heavier;best     

    B.heavy;the best     

    C.heavier;the best     

    D.heavy;better

    9.We are glad to see that our hometown is developing  ______ these years than ever before.

    A.quickly  B.less quickly     

    C.more quickly  D.the most quickly

    10.The Yangtze River is one of ____ in the world.

    A.the longest rivers         

    B.the longest river

    C.longer rivers             

    D.longer river

    11.Do you believe some special dogs can do things ________ man?

    A.as good as  

    B.as well as    

    C.as soon as  

    D.as careful as

    12.Of the two sisters,Lucy is ______ one,and she is also the one who loves to be quiet.

    A.a younger  B.a youngest      

    C.the younger  D.the youngest

    13.The weather is becoming________ .

    A.hotter and hotter   

    B.more hot and hot

    C.hoter and hoter    

    D.more and more hot

    14.—It’s smoggy these days. That’s terrible!

    —Yes.I hope to plant trees.______ trees,______ air pollution.

    A.The more,the fewer         

    B.The less,the more

    C.The less,the fewer          

    D.The more,the less 

    15.The old man is looking at his granddaughter ______. He has not seen her for a long time.

    A.happy  B.happily  

    C.happier  D.the happiest

    16.Mary felt ill on Monday, and ________ the following day, so she went to see a doctor.

    A.badly  B.worse  C.worst  D.more ill

    17.________ you work, ________ you will do.

    A.Harder;better

    B.The harder;the worse  

    C.Hardest;best

    D.The harder;the better

    18.The turkey tastes ____ the chicken.

    A.as better as    B.much better than    C.as well as    D.the best to

    19.With the help of German experts, the factory produced ____ cars in 1993 as the year before.

    A.as twice many 

    B.as many as twice 

    C.as twice as many 

    D.twice as many

    20.If you decide on the date to leave Shanghai, please tell me ____ possible.

    A.as fast as    

    B.as quickly as    

    C.as swiftly as    

    D.as soon as

    21.People prefer to send e-mail than to post letters because e-mail are much ____ than letters.

    A.fast and convenient         

    B.faster and convenient

    C.fast and more convenient    

    D.faster and more convenient

    22.The Mars is far ____ to us than the Pluto (冥王星). We wish we could live on it one day.

    A.close  B.closer  C.closest  D.the closest

    23.The turkey smelt ____ the chicken wings.

    A.as delicious as  

    B.as deliciously as  

    C.much delicious than 

    D.more deliciously than

    24.Please listen as ____ as possible so that you won’t make any mistakes.

    A.careful  B.much carefully  

    C.more carefully  D.carefully

    25.In my opinion, the Summer Palace looks ____ than Bei Hai Park.

    A.beautiful  B.more beautiful  

    C.beautifully  D.more beautifully

    三、用括号内的单词的正确形式填空

    1. The ______________ (little) you do, the ______________ (bad) the results will be.

    2. Alice writes ______________ (careful) than I.

    3. Which film is ______________ (interesting), this one or that one?

    4. That was one of ______________ ( exciting) moments in 2008.

    5. This kind of food must be ______________ ( delicious) than that one.

    6. Beihai park is one of ______________ (beautiful ) parks in Beijing.

    7. Who’s ______________ (careful), Tom,Jim or Kate?

    8. That is ______________ (easy) of all.

    9. He is ______________ (clever ) boy in the class.

    10. It is ______________ (good) to teach a man to fish than to give him fish.

    11. She is ______________ (pretty) girl in the group.

    12. Can you show me ______________ (near) shop here?

    13. This bridge is as ______________ ( long) as that one, but it is much ______________ (wide) than that one.

    14. I think English is one of _______________ (important ) subjects in middle school.

    15. I have nothing ______________ (far) to say.

    16. Tracy is my ______________ (old) sister.

    17. The boy is not so _____________ (interesting) as his brother.

    18. She will be much ______________ (happy) in her new house

    19. John’s parents have four daughters, and she is ______________ (young) child

    20. Many students go abroad to ______________ (far) their studies.

    参考答案

    一、

    serious-more serious-most serious 

    friendly-friendlier-friendliest

    far-farther/further-farthest/furthest

    badly-worse-worst

    hard-harder-hardest

    little-less-least

    heavy-heavier-heaviest

    heavily-more heavily-most heavily

    cheap-cheaper-cheapest

    much-more-most

    safe-safer-safest

    tired-more tired-most tired

    thin-thinner-thinnest

    comfortable-more comfortable-most comfortable   

    many-more-most 

    slowly-more slowly-most slowly

    funny-funnier-funniest

    quiet-quieter-quietest

    二、

    1-5 CADDC  6-10 DDCCA  11-15 BCADB 16-20 BDBDD  21-25 DBADB

    三、

    1. less, worse  2. more carefully  3. more interesting  4. the most exciting  5. more delicious  6. the most beautiful  7. the most careful  8. easiest  9. the cleverest  10. better  11. the prettiest  12. the nearest  13. long, wider  14. the most important  15. further  16. elder  17. interesting  18. happier  19. the youngest  20. further  

    Get one more !

    bd0fb3324d359b05cc1b17b665ca86c3.png

    展开全文
  • assert 的用法

    2014-02-26 14:10:34
    assert() 宏用法 注意:assert是宏,而不是函数。在Cassert.h 头文件中。 定义如下: #define assert(_Expression) (void)( (!!(_Expression)) || (_wassert(_CRT_WIDE(#_Expression), _CRT_WIDE(__FILE__), __...
    assert() 宏用法
    注意:assert是宏,而不是函数。在C的assert.h 头文件中。
    定义如下:
    #define assert(_Expression) (void)( (!!(_Expression)) || (_wassert(_CRT_WIDE(#_Expression), _CRT_WIDE(__FILE__), __LINE__), 0) )
    assert宏的原型定义在<assert.h>中,其作用是如果它的条件返回错误,则终止程序执行,原型定义:
    #include <assert.h>
    void assert( int expression );
    assert的作用是先计算表达式 expression ,如果其值为假(即为0),那么它先向stderr打印一条出错信息,
    然后通过调用 abort 来终止程序运行。
    展开全文
  • “wget” 这个名称来源于 “World Wide Web” 与 “get” 结合。 所谓自动下载,是指 wget 可以在用户退出系统之后在继续后台执行,直到下载任务完成。 2.用法 基本用法格式: wget [OPTION] [URL] 在linux下,...

    1.介绍

    wget 是一个从网络上自动下载文件的自由工具,支持通过 HTTP、HTTPS、FTP 三个最常见的 TCP/IP协议下载,并可以使用 HTTP 代理。

    “wget” 这个名称来源于 “World Wide Web” 与 “get” 的结合。

    所谓自动下载,是指 wget 可以在用户退出系统的之后在继续后台执行,直到下载任务完成。

    2.用法

    基本用法格式:

    wget [OPTION] [URL]
    

    在linux下,可以终端输入命令$ wget --help | more查看其详细用法。

    $ wget --help | more
    GNU Wget 1.19.4, a non-interactive network retriever.
    Usage: wget [OPTION]... [URL]...
    
    Mandatory arguments to long options are mandatory for short options too.
    
    Startup:
      -V,  --version                   display the version of Wget and exit
      -h,  --help                      print this help
      -b,  --background                go to background after startup
      -e,  --execute=COMMAND           execute a `.wgetrc'-style command
    
    Logging and input file:
      -o,  --output-file=FILE          log messages to FILE
      -a,  --append-output=FILE        append messages to FILE
      -d,  --debug                     print lots of debugging information
      -q,  --quiet                     quiet (no output)
      -v,  --verbose                   be verbose (this is the default)
      -nv, --no-verbose                turn off verboseness, without being quiet
           --report-speed=TYPE         output bandwidth as TYPE.  TYPE can be bits
      -i,  --input-file=FILE           download URLs found in local or external FILE
      -F,  --force-html                treat input file as HTML
      -B,  --base=URL                  resolves HTML input-file links (-i -F)
                                         relative to URL
           --config=FILE               specify config file to use
           --no-config                 do not read any config file
           --rejected-log=FILE         log reasons for URL rejection to FILE
    
    Download:
      -t,  --tries=NUMBER              set number of retries to NUMBER (0 unlimits)
           --retry-connrefused         retry even if connection is refused
      -O,  --output-document=FILE      write documents to FILE
      -nc, --no-clobber                skip downloads that would download to
                                         existing files (overwriting them)
           --no-netrc                  don't try to obtain credentials from .netrc
    

    也可以参考:
    Linux wget命令详解 wget下载工具用法详解(附实例说明)
    linux下载文件命令 wget 介绍
    Linux的wget命令详解
    这几篇文章对wget命令进行了比较详细的介绍。

    wget功能十分强大,下面简单讲几个常用的用法。

    2.1 wget下载单个文件

    从网络下载一个文件并保存在当前目录。在下载的过程中会显示进度条,包含下载完成百分比已经下载的字节当前下载速度剩余下载时间

    $ wget http://releases.ubuntu.com/18.04/ubuntu-18.04.5-desktop-amd64.iso
    

    2.2 wget -P下载到自定义路径

    可以将文件下载到自己指定的路径下,而不是当前路径。
    用法:

    $ wget -P PATH url
    

    比如下载到/home/myfile路径下:

    $ wget -P /home/myfile  http://releases.ubuntu.com/18.04/ubuntu-18.04.5-desktop-amd64.iso
    

    2.3 wget -O下载并自定义文件名保存

    wget默认会以最后一个符号”/”的后面的字符来命名下载文件,对于动态链接的下载通常文件名会不正确。

    • 错误:下面的例子会下载一个文件并以名称download.php?id=1080保存,即使下载的文件是zip格式,它仍然以download.php?id=1080命名。
    $ wget http://www.centos.bz/download?id=1 
    
    • 正确:为了解决这个问题,我们可以使用参数-O来指定一个文件名wordpress.zip:
    $ wget -O wordpress.zip http://www.centos.bz/download.php?id=1080 
    

    2.4 wget -c断点续传

    使用wget -c重新启动下载中断的文件,对于我们下载大文件时突然由于网络等原因中断非常有帮助,我们可以继续接着下载而不是重新下载一个文件。需要继续中断的下载时可以使用-c参数。

    $ wget -c http://releases.ubuntu.com/18.04/ubuntu-18.04.5-desktop-amd64.iso
    

    2.5 wget -b后台下载

    对于下载非常大的文件的时候,我们可以使用参数-b进行后台下载。

    $ wget -b http://releases.ubuntu.com/18.04/ubuntu-18.04.5-desktop-amd64.iso
    Continuing in background, pid 1840. 
    Output will be written to `wget-log’. 
    

    可以使用以下命令来察看下载进度:

    $ tail -f wget-log
    

    2.6 wget -i下载多个文件

    当要下载的文件数量较多时,可以使用

    $ wget -i url_list.txt
    

    来批量下载多个文件。

    比如现在你有要下载三个ubuntu安装镜像文件,其url分别为:
    http://releases.ubuntu.com/20.04/ubuntu-20.04.1-desktop-amd64.iso
    http://releases.ubuntu.com/18.04/ubuntu-18.04.5-desktop-amd64.iso
    http://releases.ubuntu.com/16.04/ubuntu-16.04.7-desktop-amd64.iso
    现在将其分三行写入一个文本文件ubuntu_iso_url.txt
    查看有无错误:

    $ cat ubuntu_iso_url.txt
    http://releases.ubuntu.com/20.04/ubuntu-20.04.1-desktop-amd64.iso
    http://releases.ubuntu.com/18.04/ubuntu-18.04.5-desktop-amd64.iso
    http://releases.ubuntu.com/16.04/ubuntu-16.04.7-desktop-amd64.iso
    

    没有问题就命令行输入:

    $ wget -i ubuntu_iso_url.txt
    
    展开全文
  • Swift 2.0中打印函数的用法

    千次阅读 2015-10-06 18:13:36
    在今年苹果全球开发者大会上(Worldwide Developers Conference, WWDC 2015),苹果发布了Swift 2.0版本,对1.x版本,2.0版本做了许多细节上改动,这篇文章便来谈谈打印函数变化。  最近一直在看Swift语言,...

           在今年的苹果全球开发者大会上(Worldwide Developers Conference, WWDC 2015),苹果发布了Swift 2.0版本,对1.x版本,2.0版本做了许多细节上的改动,这篇文章便来谈谈打印函数的变化。

           最近一直在看Swift语言,许多书上打印“Hello World”的语句是这样子的:

    println("Hello, World")

           

           但是,如果你在Xcode7中的playground输入这句语句,会出现下面的报错:



           在控制台,输出的是:


           

           这是什么情况呢?简单地说就是,在2.0之后的版本中,“println”这个函数现在已经没有了,取而代之的是“print”。所以,想要打印“Hello World”,需要这样子写:

    print("Hello, World")


           熟悉Swift语言的同学应该知道,“print”函数在Swift 1.x版本中也有,主要功能是打印一句话,且不会自动换行。但是在2.0之后的版本中,“print”函数在默认的情况下是自动换行的。

           有同学会问,那么在2.0之后的版本中,想要打印一句话并且不换行,该怎么写?我们来看看“print”函数的声明语句:

    /// Writes the textual representations of `items`, separated by
    /// `separator` and terminated by `terminator`, into the standard
    /// output.
    ///
    /// The textual representations are obtained for each `item` via
    /// the expression `String(item)`.
    ///
    /// - Note: to print without a trailing newline, pass `terminator: ""`
    ///
    /// - SeeAlso: `debugPrint`, Streamable`, `CustomStringConvertible`,
    ///   `CustomDebugStringConvertible`
    public func print(items: Any..., separator: String = default, terminator: String = default)

           可以发现,“print”函数的传入参数有三个:items, separator, terminator。“terminator”这个参数的主要作用是,在打印的字符串末尾加上指定的后缀,默认值为"\n"。在函数说明中,有这么一句注释:

    /// - Note: to print without a trailing newline, pass `terminator: ""`
           也就是说,想要打印一句话并且不换行,需要向“terminator”这个参数传递一个空字符串""。因此,打印“Hello World”且不换行,需要像下面这样子写:

    print("Hello, World", terminator:"")

           好了,以上就是有关Swift 2.0之后版本中打印函数的一些小变化。



    展开全文
  • 别名alias两种用法

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  • 有网友指出我转载文章...文章地址是:https://blog.csdn.net/wide288/article/details/97614826#comments 评论中讨论是: 测试代码如下: package main import "fmt" func main() { fmt.Println("Hello,...
  • wget简单用法

    2019-12-26 15:53:29
    wget功能很强大,wget 是一个从网络上自动下载文件自由工具,支持..."wget" 这个名称来源于 “World Wide Web” 与 “get” 结合 比如ftp例子: wget -r -c -nH -np ftp://ftpuser:China123@192.168.97.6/...
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    千次阅读 2009-07-23 14:07:00
    先来介绍一下子服务器基本情况,windows 2000 adv server 中文版,据称打过了...端口21开放: FTP (Control)端口80开放: HTTP, World Wide Web端口135开放: Location Service端口139开放: NETBIOS Session Service端口
  • 先来介绍一下子服务器基本情况,windows 2000 adv server 中文版,据称 ...端口21开放: FTP (Control)端口80开放: HTTP, World Wide Web端口135开放: Location Service端口139开放: NETBIOS Session Service...
  • size_t用法总结

    2021-02-14 12:03:58
    size_t在C语言中就有了。 它是一种“整型”类型,里面保存是一个整数,就像int, long那样。这种整数用来记录一个大小(size)。size_t全称应该是size type,就是说“一种用来记录大小数据...wchar_t就是wide char
  • 本文实例讲述了JavaScript关联数组用法。分享给大家供大家参考,具体如下: 基本概念: “关联数组”是一种具有特殊索引方式数组。不仅可以通过整数来索引它,还可以使用字符串或者其他类型值(除了NULL)来索引...
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  • html简介及用法总结

    2010-06-26 17:31:44
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  • 宽字符,wide character,该字符集内每个字符使用相同位长; 多字节字符,multibyte character,每个字符可以是一到多个字节不等,而某个字节序列字符值由字符串或流(stream)所在环境背景决定。 当你...
  • 名字是“World Wide Web”和“Get”结合,同时也隐含了软件主要功能。当前它支持通过HTTP、HTTPS,以及FTP这三个最常见TCP/IP协议协议下载。 一、 命令格式 wget [option]... [URL]... // Wget - The ...
  • (转)VB WinInet 函数用法详解

    千次阅读 2010-10-27 12:41:00
    WinInet WinInet(「Windows Internet」)API帮助程序员使用三个常见Internet协议,这三个协议是:用于World Wide Web万维网超文本传输协议(HTTP:Hypertext Transfer Protocol)、文件传输协议(FTP:File ...
  • L、TEXT、_TEXT、_T 用法说明

    千次阅读 2012-09-25 11:00:10
    L:表示一个字符(串)是宽...宽字符(wide character):每个字符使用相同位长 多字节字符(multibyte character):每个字符为一到多个字节,而某个字节序列字符值由字符串或流(stream)所在环境背景决定。
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  • 需要用到sys.argv,yield,re.sub,标准输入输出用法 test.txt内容 Welcome to World Wide Spam, Inc. These are the corporate web pages of *World Wide Spam*, Inc. We hope you find your sta...
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