Сопоставление с образцом (pattern matching) — сильный механизм языков программирования, который, к сожалению, встречается не так часто. Причём, как в коде разработчиков, так и в поддержке со стороны самого языка.
Разработчики на функциональных языках используют этот механизм довольно часто, потому что у них вообще многое определяется статически через правильный подход к системе типов. Разработчики же на императивных языках очень любят огромные многоуровневые ветвления. Есть даже такое понятие «Спагетти-код» — раньше его применяли к коду, перегруженному операторами перехода, но в современном виде это скорее об избытке операторов условия.
Pattern matching позволяет накладывать на объекты некоторый трафарет и смотреть, попадают ли они под него. Это не только выглядит лаконичнее и короче, чем дерево условий, но ещё и понятнее с точки зрения восприятия человеком: вот у нас заказ содержит более 10 элементов и при этом стоит более 1000 долларов, значит делаем на него скидку 10 центов. При этом трафарет работает как сортировщик монеток: самая маленькая проваливается в первый паз, следующая по размеру в следующий итд, применение условий идёт сверху вниз. Есть и неявный плюс: такой подход автоматически провоцирует разработчиков проводить проверку на null. Ведь null не может подходить под трафарет «содержит более 10 товаров».
К счастью, в C# этот механизм в последних версиях активно развивают и совершенствуют. И это одно из многочисленных преимуществ C# над Java.
#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