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View Code? Open in Web Editor NEWThis repository is used to collect the web development technology Which I thought is worth to be arranged agian.
This repository is used to collect the web development technology Which I thought is worth to be arranged agian.
从前有一家IT公司,里面有很多人,每个人都有自己的年龄、身高、性别,等等。这些人在这家IT公司里从事着不同的职业,有负责接待的前台,有负责销售的业务员,有负责招聘的HR,有负责扫地的清洁工,还有很多很多负责敲代码的码农。
对象A:前台小妹/属性:20岁,168cm,女/行为:吃饭、走路、说话、接待
对象B:业务员老王/属性:30岁,175cm,男/行为:吃饭、走路、说话、销售
对象C:人事小花/属性:25岁,165cm,女/行为:吃饭、走路、说话、招聘
对象D:清洁工大妈/属性:40岁,160cm,女/行为:吃饭、走路、说话、扫地
对象E:码农阿磊/属性:20岁,170cm,男/行为:吃饭、走路、说话、敲代码
docker 是什么,发展历史
docker 有哪些优点和缺点
如何使用docker
与docker相关的周边技术
如何理解dockerfile
docker 命令
命名空间与程序集的区别。
命名空间用于对类型进行逻辑分组。程序集则是程序的物理分组,对应于一个dll或exe文件
为什么要使用两种方式分组?把逻辑分组作为物理分组不是更简单吗?
逻辑分组主要针对开发人员,而物理分组主要针对安装和部署。
除此之外,以下情况也需要使用两种方式分组,否则会很不方便。
1. 团队开发。一个公司分别由不同的部门共同开发同一个命名空间的不同组件。那么不同的部门可以把他们开发的东西编译成各自的dll文件。使用时把几个dll一起引用即可。
2. 一个命名空间里包含的类型太多,而有大部分是用不上的。如果把一个命名空间编译成一个dll,则会降低运行效率。
3. 有时需要对一个命名空间内的类型区别对待。如果打算开发一个系列软件,该软件分普通版,专业版,高级版。越高的版本具有越高的权限(当中包含了一些高级的类),这时可以把高级的功能放到一个单独的dll来控制。
类型可以没有命名空间吗?
可以
Object类的名字到底是Object还是System.Object?
可以说都是也可以说都不是。
1. 对于IL来说,确定一个类型是需要程序集+类型全名称的。比方调用Object的ToString()方法,其实是[MSCorLib.dll]System.Object::ToString()。因此CLR不知道命名空间的事情,它只知道调用MSCorLib.dll中的System.Object类。
2. 对于C#来说,编译后会自动把命名空间加上点号让类型名变成全名称。但是,类名是不能出现点(.)符号的,以下代码在逻辑上是成立的,但是C#语法不允许。
命名空间和程序集的关系:
1. 从属于一个命名空间的各个类型可能在不同的程序集中实现。例如:system.IO.FileStream类型是在MSCorlib.dll 程序集中实现的,而System.IO.FileSystemWatcher类型是在System.dll 程序集中实现的。事实上, .Net framework 甚至根本没有发布一个System.IO.dll程序集。(一个程序集内可能有多个命名空间,同一个命名空间可能存在于不同的程序集中.)
2. 在一个程序集中,也可能包含不同命名空间中的类型。例如,System.Int32和System.Text.StringBuilder类型都在MSCorLib.dll程序集中。
3. 在.net framework SDk文档中查找一个类型时,文档会明确的指出类型所属的命名空间,以及实现了该类型的程序集。
什么是TCP协议和UDP协议
解决什么问题
什么地方使用TCP协议以UDP协议
优缺点
Symbol | Name |
---|---|
~ | Tilde /'tɪldə/ |
& | Ampersand, epershand, symbol |
# | Octothorpe, number, pound, sharp, hash |
! | Exclamation mark, exclamation point |
@ | Ampersat,arobase,asperand, at |
§ | Micro, section |
^ | Caret, circumflex |
* | Asterisk |
() | Parenthesis |
{} | Brace, Curly Brackets |
[] | Brackets |
: | Colon /'kolən/ |
- | Hyphen, minus, dash |
_ | Underscore |
/ | Forward slash |
\ | backslash |
+ | plus |
= | Equal |
` | Acute, back quote |
; | Semicolon /'sɛmɪkolən/ |
"" | Quote /kwəʊt/ |
'' | Apostrophe, single quote |
, | Comma |
. | Period, dot |
? | Question mark |
先搞清楚vim的三种模式:
1.命令模式:在Linux终端中输入“vim 文件名”就进入了命令模式,但不能输入文字。
2.编辑模式:在命令模式下按i就会进入编辑模式,此时就可以写入程式,按Esc可回到命令模式。
3.末行模式:在命令模式下按:进入末行模式,左下角会有一个冒号出现,此时可以敲入命令并执行。
shortcut | meaning |
---|---|
Ctrl + N | Opens a new windows |
Ctrl + T | Opens a new tab |
Ctrl + Shift + T | Reopens the last tab you've closed |
Ctrl +1 through Ctrl + 8 | Switches to the tab at the specified position number |
Ctrl + 9 | Switches to the last tab |
Alt + left arrow | Goes to the previous page in your browsing history for the tab |
Alt + right arrow | Goes to the next page in your browsing history for the tab |
shortcut | meaning |
---|---|
Alt + F | Opens the chrome menu which let you control settings |
Ctrl + Shift + B | Toggles the bookmarks bar on and off |
Ctrl + H | Opens the history page |
Ctrl + J | Opens the downloads page |
Shift + Esc | Opens the Task Manager |
Ctrl + Shift + J | Open Developer Tools |
Ctrl + Shift + Delete | Opens the clear Browsing Data Dailog |
Ctrl + Enter | Add www. and .com to your input in the address bar |
Ctrl + K or Ctrl + E | Place a ? in the address bar, then enter |
布局
位置
尺寸
公有访问,不受任何限制,任何地方都可以使用。
私有访问修饰符,被private访问修饰符修饰的成员只有在当前类的内部可以访问,其他地方包括子类,实例一律不得访问。类中成员不用修饰符,默认为private。
表示当前类内部可以访问,并且所有的子类内部也可以访问,实例不能访问。
当前程序集内部。类的默认访问修饰符是internal。
兼具protected和internal的特性,当前类内部,所有子类内部,当前程序集内部都可以访问。
protected和internal访问修饰符无所谓哪个更“可访问”,因为判断标准不一样。
protected只看是否是当前类内部或者所有子类内部,与是否在同 一个程序集无关。
internal只看是否在一个程序集内,与其是否有继承关系无关。
People
:bowtie: |
😄 :smile: |
😆 :laughing: |
---|---|---|
😊 :blush: |
😃 :smiley: |
:relaxed: |
😏 :smirk: |
😍 :heart_eyes: |
😘 :kissing_heart: |
😚 :kissing_closed_eyes: |
😳 :flushed: |
😌 :relieved: |
😆 :satisfied: |
😁 :grin: |
😉 :wink: |
😜 :stuck_out_tongue_winking_eye: |
😝 :stuck_out_tongue_closed_eyes: |
😀 :grinning: |
😗 :kissing: |
😙 :kissing_smiling_eyes: |
😛 :stuck_out_tongue: |
😴 :sleeping: |
😟 :worried: |
😦 :frowning: |
😧 :anguished: |
😮 :open_mouth: |
😬 :grimacing: |
😕 :confused: |
😯 :hushed: |
😑 :expressionless: |
😒 :unamused: |
😅 :sweat_smile: |
😓 :sweat: |
😥 :disappointed_relieved: |
😩 :weary: |
😔 :pensive: |
😞 :disappointed: |
😖 :confounded: |
😨 :fearful: |
😰 :cold_sweat: |
😣 :persevere: |
😢 :cry: |
😭 :sob: |
😂 :joy: |
😲 :astonished: |
😱 :scream: |
:neckbeard: |
😫 :tired_face: |
😠 :angry: |
😡 :rage: |
😤 :triumph: |
😪 :sleepy: |
😋 :yum: |
😷 :mask: |
😎 :sunglasses: |
😵 :dizzy_face: |
👿 :imp: |
😈 :smiling_imp: |
😐 :neutral_face: |
😶 :no_mouth: |
😇 :innocent: |
👽 :alien: |
💛 :yellow_heart: |
💙 :blue_heart: |
💜 :purple_heart: |
❤️ :heart: |
💚 :green_heart: |
💔 :broken_heart: |
💓 :heartbeat: |
💗 :heartpulse: |
💕 :two_hearts: |
💞 :revolving_hearts: |
💘 :cupid: |
💖 :sparkling_heart: |
✨ :sparkles: |
⭐ :star: |
🌟 :star2: |
💫 :dizzy: |
💥 :boom: |
💥 :collision: |
💢 :anger: |
❗ :exclamation: |
❓ :question: |
❕ :grey_exclamation: |
❔ :grey_question: |
💤 :zzz: |
💨 :dash: |
💦 :sweat_drops: |
🎶 :notes: |
🎵 :musical_note: |
🔥 :fire: |
💩 :hankey: |
💩 :poop: |
💩 :shit: |
👍 :+1: |
👍 :thumbsup: |
👎 :-1: |
👎 :thumbsdown: |
👌 :ok_hand: |
👊 :punch: |
👊 :facepunch: |
✊ :fist: |
✌️ :v: |
👋 :wave: |
✋ :hand: |
✋ :raised_hand: |
👐 :open_hands: |
☝️ :point_up: |
👇 :point_down: |
👈 :point_left: |
👉 :point_right: |
🙌 :raised_hands: |
🙏 :pray: |
👆 :point_up_2: |
👏 :clap: |
💪 :muscle: |
🤘 :metal: |
🖕 :fu: |
🚶 :walking: |
🏃 :runner: |
🏃 :running: |
👫 :couple: |
👪 :family: |
👬 :two_men_holding_hands: |
👭 :two_women_holding_hands: |
💃 :dancer: |
👯 :dancers: |
🙆♀️ :ok_woman: |
🙅 :no_good: |
💁 :information_desk_person: |
🙋 :raising_hand: |
👰♀️ :bride_with_veil: |
:person_with_pouting_face: :person_with_pouting_face: |
:person_frowning: :person_frowning: |
🙇 :bow: |
💏 :couplekiss: |
💑 :couple_with_heart: |
💆 :massage: |
💇 :haircut: |
💅 :nail_care: |
👦 :boy: |
👧 :girl: |
👩 :woman: |
👨 :man: |
👶 :baby: |
👵 :older_woman: |
👴 :older_man: |
:person_with_blond_hair: :person_with_blond_hair: |
👲 :man_with_gua_pi_mao: |
👳♂️ :man_with_turban: |
👷 :construction_worker: |
👮 :cop: |
👼 :angel: |
👸 :princess: |
😺 :smiley_cat: |
😸 :smile_cat: |
😻 :heart_eyes_cat: |
😽 :kissing_cat: |
😼 :smirk_cat: |
🙀 :scream_cat: |
😿 :crying_cat_face: |
😹 :joy_cat: |
😾 :pouting_cat: |
👹 :japanese_ogre: |
👺 :japanese_goblin: |
🙈 :see_no_evil: |
🙉 :hear_no_evil: |
🙊 :speak_no_evil: |
💂♂️ :guardsman: |
💀 :skull: |
🐾 :feet: |
👄 :lips: |
💋 :kiss: |
💧 :droplet: |
👂 :ear: |
👀 :eyes: |
👃 :nose: |
👅 :tongue: |
💌 :love_letter: |
👤 :bust_in_silhouette: |
👥 :busts_in_silhouette: |
💬 :speech_balloon: |
💭 :thought_balloon: |
:feelsgood: |
:finnadie: |
:goberserk: |
:godmode: |
:hurtrealbad: |
:rage1: |
:rage2: |
:rage3: |
:rage4: |
:suspect: |
:trollface: |
Nature
☀️ :sunny: |
☔ :umbrella: |
☁️ :cloud: |
---|---|---|
❄️ :snowflake: |
⛄ :snowman: |
⚡ :zap: |
🌀 :cyclone: |
🌁 :foggy: |
🌊 :ocean: |
🐱 :cat: |
🐶 :dog: |
🐭 :mouse: |
🐹 :hamster: |
🐰 :rabbit: |
🐺 :wolf: |
🐸 :frog: |
🐯 :tiger: |
🐨 :koala: |
🐻 :bear: |
🐷 :pig: |
🐽 :pig_nose: |
🐮 :cow: |
🐗 :boar: |
🐵 :monkey_face: |
🐒 :monkey: |
🐴 :horse: |
🐎 :racehorse: |
🐫 :camel: |
🐑 :sheep: |
🐘 :elephant: |
🐼 :panda_face: |
🐍 :snake: |
🐦 :bird: |
🐤 :baby_chick: |
🐥 :hatched_chick: |
🐣 :hatching_chick: |
🐔 :chicken: |
🐧 :penguin: |
🐢 :turtle: |
🐛 :bug: |
🐝 :honeybee: |
🐜 :ant: |
🪲 :beetle: |
🐌 :snail: |
🐙 :octopus: |
🐠 :tropical_fish: |
🐟 :fish: |
🐳 :whale: |
🐋 :whale2: |
🐬 :dolphin: |
🐄 :cow2: |
🐏 :ram: |
🐀 :rat: |
🐃 :water_buffalo: |
🐅 :tiger2: |
🐇 :rabbit2: |
🐉 :dragon: |
🐐 :goat: |
🐓 :rooster: |
🐕 :dog2: |
🐖 :pig2: |
🐁 :mouse2: |
🐂 :ox: |
🐲 :dragon_face: |
🐡 :blowfish: |
🐊 :crocodile: |
🐪 :dromedary_camel: |
🐆 :leopard: |
🐈 :cat2: |
🐩 :poodle: |
🐾 :paw_prints: |
💐 :bouquet: |
🌸 :cherry_blossom: |
🌷 :tulip: |
🍀 :four_leaf_clover: |
🌹 :rose: |
🌻 :sunflower: |
🌺 :hibiscus: |
🍁 :maple_leaf: |
🍃 :leaves: |
🍂 :fallen_leaf: |
🌿 :herb: |
🍄 :mushroom: |
🌵 :cactus: |
🌴 :palm_tree: |
🌲 :evergreen_tree: |
🌳 :deciduous_tree: |
🌰 :chestnut: |
🌱 :seedling: |
🌼 :blossom: |
🌾 :ear_of_rice: |
🐚 :shell: |
🌐 :globe_with_meridians: |
🌞 :sun_with_face: |
🌝 :full_moon_with_face: |
🌚 :new_moon_with_face: |
🌑 :new_moon: |
🌒 :waxing_crescent_moon: |
🌓 :first_quarter_moon: |
🌔 :waxing_gibbous_moon: |
🌕 :full_moon: |
🌖 :waning_gibbous_moon: |
🌗 :last_quarter_moon: |
🌘 :waning_crescent_moon: |
🌜 :last_quarter_moon_with_face: |
🌛 :first_quarter_moon_with_face: |
🌔 :moon: |
🌍 :earth_africa: |
🌎 :earth_americas: |
🌏 :earth_asia: |
🌋 :volcano: |
🌌 :milky_way: |
⛅ :partly_sunny: |
:octocat: |
:squirrel: :squirrel: |
Objects
🎍 :bamboo: |
💝 :gift_heart: |
🎎 :dolls: |
---|---|---|
🎒 :school_satchel: |
🎓 :mortar_board: |
🎏 :flags: |
🎆 :fireworks: |
🎇 :sparkler: |
🎐 :wind_chime: |
🎑 :rice_scene: |
🎃 :jack_o_lantern: |
👻 :ghost: |
🎅 :santa: |
🎄 :christmas_tree: |
🎁 :gift: |
🔔 :bell: |
🔕 :no_bell: |
🎋 :tanabata_tree: |
🎉 :tada: |
🎊 :confetti_ball: |
🎈 :balloon: |
🔮 :crystal_ball: |
💿 :cd: |
📀 :dvd: |
💾 :floppy_disk: |
📷 :camera: |
📹 :video_camera: |
🎥 :movie_camera: |
💻 :computer: |
📺 :tv: |
📱 :iphone: |
☎️ :phone: |
☎️ :telephone: |
📞 :telephone_receiver: |
📟 :pager: |
📠 :fax: |
💽 :minidisc: |
📼 :vhs: |
🔉 :sound: |
🔈 :speaker: |
🔇 :mute: |
📢 :loudspeaker: |
📣 :mega: |
⌛ :hourglass: |
⏳ :hourglass_flowing_sand: |
⏰ :alarm_clock: |
⌚ :watch: |
📻 :radio: |
📡 :satellite: |
➿ :loop: |
🔍 :mag: |
🔎 :mag_right: |
🔓 :unlock: |
🔒 :lock: |
🔏 :lock_with_ink_pen: |
🔐 :closed_lock_with_key: |
🔑 :key: |
💡 :bulb: |
🔦 :flashlight: |
🔆 :high_brightness: |
🔅 :low_brightness: |
🔌 :electric_plug: |
🔋 :battery: |
📲 :calling: |
📧 :email: |
📫 :mailbox: |
📮 :postbox: |
🛀 :bath: |
🛁 :bathtub: |
🚿 :shower: |
🚽 :toilet: |
🔧 :wrench: |
🔩 :nut_and_bolt: |
🔨 :hammer: |
💺 :seat: |
💰 :moneybag: |
💴 :yen: |
💵 :dollar: |
💷 :pound: |
💶 :euro: |
💳 :credit_card: |
💸 :money_with_wings: |
📧 :e-mail: |
📥 :inbox_tray: |
📤 :outbox_tray: |
✉️ :envelope: |
📨 :incoming_envelope: |
📯 :postal_horn: |
📪 :mailbox_closed: |
📬 :mailbox_with_mail: |
📭 :mailbox_with_no_mail: |
🚪 :door: |
🚬 :smoking: |
💣 :bomb: |
🔫 :gun: |
🔪 :hocho: |
💊 :pill: |
💉 :syringe: |
📄 :page_facing_up: |
📃 :page_with_curl: |
📑 :bookmark_tabs: |
📊 :bar_chart: |
📈 :chart_with_upwards_trend: |
📉 :chart_with_downwards_trend: |
📜 :scroll: |
📋 :clipboard: |
📆 :calendar: |
📅 :date: |
📇 :card_index: |
📁 :file_folder: |
📂 :open_file_folder: |
✂️ :scissors: |
📌 :pushpin: |
📎 :paperclip: |
✒️ :black_nib: |
✏️ :pencil2: |
📏 :straight_ruler: |
📐 :triangular_ruler: |
📕 :closed_book: |
📗 :green_book: |
📘 :blue_book: |
📙 :orange_book: |
📓 :notebook: |
📔 :notebook_with_decorative_cover: |
📒 :ledger: |
📚 :books: |
🔖 :bookmark: |
📛 :name_badge: |
🔬 :microscope: |
🔭 :telescope: |
📰 :newspaper: |
🏈 :football: |
🏀 :basketball: |
⚽ :soccer: |
⚾ :baseball: |
🎾 :tennis: |
🎱 :8ball: |
🏉 :rugby_football: |
🎳 :bowling: |
⛳ :golf: |
🚵 :mountain_bicyclist: |
🚴 :bicyclist: |
🏇 :horse_racing: |
🏂 :snowboarder: |
🏊 :swimmer: |
🏄 :surfer: |
🎿 :ski: |
:spades: |
:hearts: |
:clubs: |
:diamonds: |
💎 :gem: |
💍 :ring: |
🏆 :trophy: |
🎼 :musical_score: |
🎹 :musical_keyboard: |
🎻 :violin: |
👾 :space_invader: |
🎮 :video_game: |
🃏 :black_joker: |
🎴 :flower_playing_cards: |
🎲 :game_die: |
🎯 :dart: |
🀄 :mahjong: |
🎬 :clapper: |
📝 :memo: |
📝 :pencil: |
📖 :book: |
🎨 :art: |
🎤 :microphone: |
🎧 :headphones: |
🎺 :trumpet: |
🎷 :saxophone: |
🎸 :guitar: |
👞 :shoe: |
👡 :sandal: |
👠 :high_heel: |
💄 :lipstick: |
👢 :boot: |
👕 :shirt: |
👕 :tshirt: |
👔 :necktie: |
👚 :womans_clothes: |
👗 :dress: |
🎽 :running_shirt_with_sash: |
👖 :jeans: |
👘 :kimono: |
👙 :bikini: |
🎀 :ribbon: |
🎩 :tophat: |
👑 :crown: |
👒 :womans_hat: |
👞 :mans_shoe: |
🌂 :closed_umbrella: |
💼 :briefcase: |
👜 :handbag: |
👝 :pouch: |
👛 :purse: |
👓 :eyeglasses: |
🎣 :fishing_pole_and_fish: |
☕ :coffee: |
🍵 :tea: |
🍶 :sake: |
🍼 :baby_bottle: |
🍺 :beer: |
🍻 :beers: |
🍸 :cocktail: |
🍹 :tropical_drink: |
🍷 :wine_glass: |
🍴 :fork_and_knife: |
🍕 :pizza: |
🍔 :hamburger: |
🍟 :fries: |
🍗 :poultry_leg: |
🍖 :meat_on_bone: |
🍝 :spaghetti: |
🍛 :curry: |
🍤 :fried_shrimp: |
🍱 :bento: |
🍣 :sushi: |
🍥 :fish_cake: |
🍙 :rice_ball: |
🍘 :rice_cracker: |
🍚 :rice: |
🍜 :ramen: |
🍲 :stew: |
🍢 :oden: |
🍡 :dango: |
🥚 :egg: |
🍞 :bread: |
🍩 :doughnut: |
🍮 :custard: |
🍦 :icecream: |
🍨 :ice_cream: |
🍧 :shaved_ice: |
🎂 :birthday: |
🍰 :cake: |
🍪 :cookie: |
🍫 :chocolate_bar: |
🍬 :candy: |
🍭 :lollipop: |
🍯 :honey_pot: |
🍎 :apple: |
🍏 :green_apple: |
🍊 :tangerine: |
🍋 :lemon: |
🍒 :cherries: |
🍇 :grapes: |
🍉 :watermelon: |
🍓 :strawberry: |
🍑 :peach: |
🍈 :melon: |
🍌 :banana: |
🍐 :pear: |
🍍 :pineapple: |
🍠 :sweet_potato: |
🍆 :eggplant: |
🍅 :tomato: |
🌽 :corn: |
Places
🏠 :house: |
🏡 :house_with_garden: |
🏫 :school: |
---|---|---|
🏢 :office: |
🏣 :post_office: |
🏥 :hospital: |
🏦 :bank: |
🏪 :convenience_store: |
🏩 :love_hotel: |
🏨 :hotel: |
💒 :wedding: |
⛪ :church: |
🏬 :department_store: |
🏤 :european_post_office: |
🌇 :city_sunrise: |
🌆 :city_sunset: |
🏯 :japanese_castle: |
🏰 :european_castle: |
⛺ :tent: |
🏭 :factory: |
🗼 :tokyo_tower: |
🗾 :japan: |
🗻 :mount_fuji: |
🌄 :sunrise_over_mountains: |
🌅 :sunrise: |
🌠 :stars: |
🗽 :statue_of_liberty: |
🌉 :bridge_at_night: |
🎠 :carousel_horse: |
🌈 :rainbow: |
🎡 :ferris_wheel: |
⛲ :fountain: |
🎢 :roller_coaster: |
🚢 :ship: |
🚤 :speedboat: |
⛵ :boat: |
⛵ :sailboat: |
🚣 :rowboat: |
⚓ :anchor: |
🚀 :rocket: |
:airplane: |
🚁 :helicopter: |
🚂 :steam_locomotive: |
🚊 :tram: |
🚞 :mountain_railway: |
🚲 :bike: |
🚡 :aerial_tramway: |
🚟 :suspension_railway: |
🚠 :mountain_cableway: |
🚜 :tractor: |
🚙 :blue_car: |
🚘 :oncoming_automobile: |
🚗 :car: |
🚗 :red_car: |
🚕 :taxi: |
🚖 :oncoming_taxi: |
🚛 :articulated_lorry: |
🚌 :bus: |
🚍 :oncoming_bus: |
🚨 :rotating_light: |
🚓 :police_car: |
🚔 :oncoming_police_car: |
🚒 :fire_engine: |
🚑 :ambulance: |
🚐 :minibus: |
🚚 :truck: |
🚋 :train: |
🚉 :station: |
🚆 :train2: |
🚅 :bullettrain_front: |
🚄 :bullettrain_side: |
🚈 :light_rail: |
🚝 :monorail: |
🚃 :railway_car: |
🚎 :trolleybus: |
🎫 :ticket: |
⛽ :fuelpump: |
🚦 :vertical_traffic_light: |
🚥 :traffic_light: |
:warning: |
🚧 :construction: |
🔰 :beginner: |
🏧 :atm: |
🎰 :slot_machine: |
🚏 :busstop: |
💈 :barber: |
♨️ :hotsprings: |
🏁 :checkered_flag: |
🎌 :crossed_flags: |
🏮 :izakaya_lantern: |
🗿 :moyai: |
🎪 :circus_tent: |
🎭 :performing_arts: |
📍 :round_pushpin: |
🚩 :triangular_flag_on_post: |
🇯🇵 :jp: |
🇰🇷 :kr: |
🇨🇳 :cn: |
🇺🇸 :us: |
🇫🇷 :fr: |
🇪🇸 :es: |
🇮🇹 :it: |
🇷🇺 :ru: |
🇬🇧 :gb: |
🇬🇧 :uk: |
🇩🇪 :de: |
Symbols
1️⃣ :one: |
2️⃣ :two: |
3️⃣ :three: |
---|---|---|
4️⃣ :four: |
5️⃣ :five: |
6️⃣ :six: |
7️⃣ :seven: |
8️⃣ :eight: |
9️⃣ :nine: |
🔟 :keycap_ten: |
🔢 :1234: |
0️⃣ :zero: |
#️⃣ :hash: |
🔣 :symbols: |
:arrow_backward: |
⬇️ :arrow_down: |
:arrow_forward: |
⬅️ :arrow_left: |
🔠 :capital_abcd: |
🔡 :abcd: |
🔤 :abc: |
:arrow_lower_left: |
:arrow_lower_right: |
➡️ :arrow_right: |
⬆️ :arrow_up: |
:arrow_upper_left: |
:arrow_upper_right: |
⏬ :arrow_double_down: |
⏫ :arrow_double_up: |
🔽 :arrow_down_small: |
:arrow_heading_down: |
:arrow_heading_up: |
↩️ :leftwards_arrow_with_hook: |
↪️ :arrow_right_hook: |
:left_right_arrow: |
:arrow_up_down: |
🔼 :arrow_up_small: |
🔃 :arrows_clockwise: |
🔄 :arrows_counterclockwise: |
⏪ :rewind: |
⏩ :fast_forward: |
ℹ️ :information_source: |
🆗 :ok: |
🔀 :twisted_rightwards_arrows: |
🔁 :repeat: |
🔂 :repeat_one: |
🆕 :new: |
🔝 :top: |
🆙 :up: |
🆒 :cool: |
🆓 :free: |
🆖 :ng: |
🎦 :cinema: |
🈁 :koko: |
📶 :signal_strength: |
🈹 :u5272: |
🈴 :u5408: |
🈺 :u55b6: |
🈯 :u6307: |
🈷️ :u6708: |
🈶 :u6709: |
🈵 :u6e80: |
🈚 :u7121: |
🈸 :u7533: |
🈳 :u7a7a: |
🈲 :u7981: |
🈂️ :sa: |
🚻 :restroom: |
🚹 :mens: |
🚺 :womens: |
🚼 :baby_symbol: |
🚭 :no_smoking: |
:parking: |
♿ :wheelchair: |
🚇 :metro: |
🛄 :baggage_claim: |
🉑 :accept: |
🚾 :wc: |
🚰 :potable_water: |
🚮 :put_litter_in_its_place: |
㊙️ :secret: |
㊗️ :congratulations: |
:m: |
🛂 :passport_control: |
🛅 :left_luggage: |
🛃 :customs: |
🉐 :ideograph_advantage: |
🆑 :cl: |
🆘 :sos: |
🆔 :id: |
🚫 :no_entry_sign: |
🔞 :underage: |
📵 :no_mobile_phones: |
🚯 :do_not_litter: |
🚱 :non-potable_water: |
🚳 :no_bicycles: |
🚷 :no_pedestrians: |
🚸 :children_crossing: |
⛔ :no_entry: |
✳️ :eight_spoked_asterisk: |
✴️ :eight_pointed_black_star: |
💟 :heart_decoration: |
🆚 :vs: |
📳 :vibration_mode: |
📴 :mobile_phone_off: |
💹 :chart: |
💱 :currency_exchange: |
♈ :aries: |
♉ :taurus: |
♊ :gemini: |
♋ :cancer: |
♌ :leo: |
♍ :virgo: |
♎ :libra: |
♏ :scorpius: |
♐ :sagittarius: |
♑ :capricorn: |
♒ :aquarius: |
♓ :pisces: |
⛎ :ophiuchus: |
🔯 :six_pointed_star: |
❎ :negative_squared_cross_mark: |
:a: |
:b: |
🆎 :ab: |
:o2: |
💠 :diamond_shape_with_a_dot_inside: |
♻️ :recycle: |
🔚 :end: |
🔛 :on: |
🔜 :soon: |
🕐 :clock1: |
🕜 :clock130: |
🕙 :clock10: |
🕥 :clock1030: |
🕚 :clock11: |
🕦 :clock1130: |
🕛 :clock12: |
🕧 :clock1230: |
🕑 :clock2: |
🕝 :clock230: |
🕒 :clock3: |
🕞 :clock330: |
🕓 :clock4: |
🕟 :clock430: |
🕔 :clock5: |
🕠 :clock530: |
🕕 :clock6: |
🕡 :clock630: |
🕖 :clock7: |
🕢 :clock730: |
🕗 :clock8: |
🕣 :clock830: |
🕘 :clock9: |
🕤 :clock930: |
💲 :heavy_dollar_sign: |
©️ :copyright: |
®️ :registered: |
™️ :tm: |
❌ :x: |
❗ :heavy_exclamation_mark: |
:bangbang: |
:interrobang: |
⭕ :o: |
✖️ :heavy_multiplication_x: |
➕ :heavy_plus_sign: |
➖ :heavy_minus_sign: |
➗ :heavy_division_sign: |
💮 :white_flower: |
💯 :100: |
✔️ :heavy_check_mark: |
☑️ :ballot_box_with_check: |
🔘 :radio_button: |
🔗 :link: |
➰ :curly_loop: |
〰️ :wavy_dash: |
〽️ :part_alternation_mark: |
🔱 :trident: |
:black_square: :black_square: |
:white_square: :white_square: |
✅ :white_check_mark: |
🔲 :black_square_button: |
🔳 :white_square_button: |
⚫ :black_circle: |
⚪ :white_circle: |
🔴 :red_circle: |
🔵 :large_blue_circle: |
🔷 :large_blue_diamond: |
🔶 :large_orange_diamond: |
🔹 :small_blue_diamond: |
🔸 :small_orange_diamond: |
🔺 :small_red_triangle: |
🔻 :small_red_triangle_down: |
:shipit: |
public class A
{
public void MethodF()
{
Console.WriteLine("A.F");
}
public virtual void MethodG()
{
Console.WriteLine("A.G");
}
}
public class B : A
{
new public void MethodF()
{
Console.WriteLine("B.F");
}
public override void MethodG()
{
Console.WriteLine("B.G");
}
}
class Test
{
static void Main()
{
B b;
b = new B();
A a = b;
a.MethodF(); // A.F
b.MethodF(); // B.G
a.MethodG(); //B.F
b.MethodG(); //B.G
}
什么是深拷贝和浅拷贝what
两种拷贝之间的异同
为什么会出现这两种技术?why
何时会用到这些技术?when
哪些情况会用到?where
谁会用到这种方式?who
如何使用?how
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.