1. if-else 两个调用相同的Function,但是参数不同, 通常情况性能下降一半 2 使用Constants 或者Load/Fetch来替代大量的if-elseif实现查找表 lookup table 3 使用多个if语句替代if-elseif以使用少量的ALU来替代分支语句。 4 switch-case优化 1. if-else 两个调用相同的Function,但是参数不同
由于switch语句表达的意图与if/else链相同,但以更严格、更正式的方式,您的第一个猜测应该是编译器将能够更好地优化它,因为它可以得出更多关于您的代码条件的结论(即只有一种状态可能是真的,即正在比较的值是一个基元类型等)当您比较两个类似的语言结构以获得运行时性能时,这是一个非常安全的一般事实。关于.NET:...
If vs Switch Caseis one of clarity. It shouldn't make much difference in term of performance.
The result of the switch if switchValue does not match any of the cases. comparison Type: System.Reflection.MethodInfo The equality comparison method to use. cases Type: System.Collections.Generic.IEnumerable<SwitchCase> The set of cases for this switch expression. Return Value Type:...
The result of the switch if switchValue does not match any of the cases. cases Type: array<System.Linq.Expressions.SwitchCase[] The set of cases for this switch expression. Return Value Type:System.Linq.Expressions.SwitchExpression The createdSwitchExpression. ...
5. In this case, the router determines the optimal route based on the internal preference listed inTable 8-2. An OSPF route has an internal preference of 10, and a static route has an internal preference of 60. This indicates that the OSPF route has a higher preference than the static ...
Hold-down mode: In the case of frequent flooding and topology changes during neighbor relationship establishment, interfaces prevent neighbor relationships from being reestablished during the suppression period, which minimizes LSDB synchronization attempts and packet exchanges. Hold-max-cost mode: If the ...
case 2: somethingElse = something; break; // is not flagged and is valid} return somethingElse Anonymous November 15, 2004 The comment has been removed Anonymous November 15, 2004 Ah.. I forgot to mention: IF fallthrough would have been an option for switch then my analogy breaks. Anonymo...
Check whether the called view is a text editor, in which case it would make sense to automatically display a soft input window for it. (Inherited from View) OnCommitCompletion(CompletionInfo) Called by the framework in response to a text completion from the current input method, provided ...
To ensure the best Mesh performance, It is recommended that all network cables (RJ45) be CAT5e or larger. In this case, the Main AiMesh router and all other AiMesh nodes which directly connect to your modem need to be set in AP mode (Bridge mode), and it will get IP address from you...