Паттерн Декоратор — специальный способ организации модулей в программе, который позволяет подставить какую-то новую функцию прямо в середину цепочки вызовов, тем самым чуть-чуть подкорректировав поведение.
Например, в реальном мире очки для чтения это декоратор. Вы ставите их между вашими глазами и текстом. Глобально взаимодействие ваших глаз и текста не меняется: отражённые световые лучи от страницы книги попадают в ваши зрачки, что с очками, что без них. Но очки располагаются посередине: они принимают лучи на вход и преломляют их, передавая дальше вам в глаза уже изменёнными.
Важной особенностью является тот факт, что очки можно снять. Они не требуют ни модификации вашего тела, ни модификации книги. Вообще никакие условия не нужны, кроме наличия самих очков. А если вы в линзах, то внешний наблюдатель может даже этого не знать.
Класс-декоратор должен быть спроектирован так, чтобы не требовать никаких изменений в объектах, с которыми он работает. Его можно отключить, чаще всего буквально закомментировав одну строку.
В примере ниже программа выведет текст "Привет, мир, в натуре.", и вот это дополнение в конце как раз дописано декоратором. Можно убрать или закомментировать подчёркнутую строчку, не трогая остальной код, для всех внешних вызовов сигнатуры останутся теми же самыми, но выводиться будет уже просто "Привет, мир".
В декораторы можно прятать логику, которую буквально навешивают поверх основной функции программы. Например, проверку прав на выполнение операции. Перевод на другой язык, логирование, поддержку обратной совместимости при обновлении и так далее.
#dev
Overcoming The Fear Of Public Speaking
Many of us feel nervous, shy, break into sweat or fear the thought of public speaking. Did you know that public speaking is among the most feared activities in the world? Some of us feel it is not our strength and fear being judged. Public speaking is an essential skill to effectively convey what we want to.
1. Your thoughts, feelings, personality, values – they are all a packet of your energy called vibrations. These vibrations reach people before your words. They are the first level of your communication with others. So keep them pure.
2. Meditation and daily study of spiritual wisdom every morning keeps your thoughts clean and less. When you start thinking right and positive, you will no longer need to be careful with your words. You will speak what you think, believe and live by.
3. Focus on conveying the message, not on impressing your listeners. Do not compare or compete with others. Stand by the truth, untouched by people’s opinion.
4. Visualize yourself respectfully sharing what is in your inner consciousness - your wisdom, skills, views or experiences with a selfless intention of giving. Visualize people who receive your message getting positively influenced.
#Fear
Arachnophobia or the fear of spiders is the oldest and most common phobia in the Western culture. The word Arachnophobia is derived from the Greek word ‘arachne’ meaning spiders.
🕷🕸
[Learn more]
@googlefactss
#spiders#fear#HumanMind
Phobia is an intense, irrational fear of something that is often not dangerous. Fear is a normal reaction to real danger or threat. Phobias cause strong anxiety that is much bigger than the actual risk and can disrupt daily life. Fear helps keep us safe, but phobias are more about worry and avoidance even when there is little or no real danger.
@googlefactss
#Phobia#Fear#Anxiety#MentalHealth😨⚠️
Fear or opportunity?
Fears are the body's adequate reaction to something new, to something that once caused unpleasant consequences, or to something that directly or indirectly threatens one's life.
But there are fears that simply must be overcome. For example, if you have an idea, but to implement it, you do not have the courage, and therefore and perseverance.
It is behind such fears that lies your invaluable potential. The body never generates ideas that it doesn't have the resources to implement. Our thoughts are not random. Think of the opportunities that will open up before you after you overcome your fear. Have you imagined it? Now act!
Join us for more -> @ipersonalgrowths💡
#MentalGrowth
#Fear
#opportunity
#psychologyinformation
Watching a scary video before seeing abstract art makes people feel the art is more powerful and awe-inspiring.
Fear grabs the attention and makes us focus on what we see.
🎨👻
[Read more]
@googlefactss
#Art#Fear#Psychology#Sublime#Creativity
Hello everyone! 24 hours left until our next Kucoin pump. The market looks very good and our power is growing every day. We expect a massive volume and profits tomorrow.
This is a brief explanation of what will happen during our pump:
1) When the coin is announced, we buy it together, as a team.
2) This initial push triggers buying from trading algos, MM bots and generally – outsiders.
3) As the outsider buy orders further increase the price, we begin to slowly sell way higher than where we bought.
Full guide can be found in the previous messages. Here are the results of our latest pumps:
#HIP → 2400%
#QUICK → 1500%
#BONDLY → 800%
#FEAR → 750%
#VEMP → 750%
IMPORTANT: We are the original and longest running pump group. Please ignore all ads in this channel as they are not approved by us, we do not endorse any other channels. All other alleged "pump" groups are copycats trying to capitalize on our success, reputation and care for members.
Hello everyone! Exactly 24 hours left until our next Kucoin pump. The market looks very good and our power is growing every day. We expect a massive volume and profits tomorrow.
This is a brief explanation of what will happen during our pump:
1) When the coin is announced, we buy it together, as a team.
2) This initial push triggers buying from trading algos, MM bots and generally – outsiders.
3) As the outsider buy orders further increase the price, we begin to slowly sell way higher than where we bought.
Full guide can be found in the previous messages. Here are the results of our latest pumps:
#HIP → 2400%
#QUICK → 1500%
#BONDLY → 800%
#FEAR → 750%
#VEMP → 750%
IMPORTANT: We are the original and longest running pump group. Please ignore all ads in this channel as they are not approved by us, we do not endorse any other channels. All other alleged "pump" groups are copycats trying to capitalize on our success, reputation and care for members.
K-k恐k惧j拉l斯s维w加j斯s- 恐惧拉斯维加斯 Fear and Loathing in Las Vegas (1998)
直达链接：https://pan.quark.cn/s/41140f577da4
#恐惧拉斯维加斯#赌城风情画
#Fear and Loathing in Las Vegas
#赌城情仇#拉斯维加斯的恐惧与嫌恶
链接：https://link3.cc/sf_com
#电影#喜剧#美国#90年代