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
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☀️Good Morning Traders!
📈
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🌈 | New Week, New Profits
💵
Good morning traders! ☕️
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🚀WEEKEND MODE: PREPARE TO DOMINATE!🔥🚀
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⚡️PRO THUNDER V12: THE ELITE TRADING STANDARD⚡️
Stop settling for repainting tools and local scripts. Pro Thunder V12 is the culmination of 5 years of development by SS7Trader Ltd.
Why the pros choose V12:
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🧠Neural Network AI: Powered by advanced AI to filter market noise.
✅Registered Authority: Built by a verified company, not an anonymous team.
⏳5-Year Legacy: Continuous evolution and optimization since 2021.
🎯 Pure Simplicity: Clear Buy/Sell signals with a fixed 5-minute expiry.
🌍 Universal: Works on any broker, any chart, and any timeframe.
━━━━━━━━━━━━━━━━
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⚡️PRO THUNDER V12: THE ELITE TRADING STANDARD⚡️
Stop settling for repainting tools and local scripts. Pro Thunder V12 is the culmination of 5 years of development by SS7Trader Ltd.
Why the pros choose V12:
🚫100% Non-Repaint: Signals are fixed. What you see is what you get.
🧠Neural Network AI: Powered by advanced AI to filter market noise.
✅Registered Authority: Built by a verified company, not an anonymous team.
⏳5-Year Legacy: Continuous evolution and optimization since 2021.
🎯 Pure Simplicity: Clear Buy/Sell signals with a fixed 5-minute expiry.
🌍 Universal: Works on any broker, any chart, and any timeframe.
━━━━━━━━━━━━━━━━
🚀 JOIN THE ELITE. STOP GUESSING.
🔗https://ss7trader.com/product/pro-thunder-v12/
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