WebExample 1: C# switch Statement. In this example, the user is prompted to enter an alphabet. The alphabet is converted to lowercase by using ToLower () method if it is in uppercase. Then, the switch statement checks whether the alphabet entered by user is any of a, e, i, o or u. If one of the case matches, Vowel is printed otherwise the control ... WebThe intermediate language reveals that the switch-statement uses a "switch" opcode. The if-statements simply use branch opcodes. Also: The exception logic was added to avoid …
一大堆if else或switch如何优化 - 知乎 - 知乎专栏
WebJan 9, 2024 · Version 1 This version of the code uses a switch statement. All of the cases are tested with equal priority (none is tested first). Version 2 This code uses an if-else … WebApr 22, 2024 · Video. In C#, Switch statement is a multiway branch statement. It provides an efficient way to transfer the execution to different parts of a code based on the value of the expression. The switch expression is of integer type such as int, char, byte, or short, or of an enumeration type, or of string type. The expression is checked for different ... gray horned owls pictures
C# 9.0 新特性之模式匹配简化 - 知乎 - 知乎专栏
WebJan 14, 2009 · Add a comment. 4. Switch/case statements may be typically faster 1-level deep, but when you start getting into 2 or more, switch/case statements start taking 2-3 … WebIf vs. Switch Speed. 由于编译器优化,switch语句通常比等效if-else if语句 (如本文中所述)更快。. 这种优化实际上是如何工作的?. 有人能解释清楚吗?. 编译器可以在适当的地方构 … WebOct 23, 2024 · BTW,有時候if else的速度會比switch case還要快,因為它把會成立的條件放在前面,依序執行下去;而switch case則是以隨機訪問,因此有時候速度可能會比較慢。 switch case編譯後的執行流程大致如下: 將每一個case編譯後程式的首地址保存到一個陣列 … grayhorns international