if (val > 0) { pos = true; } else { pos = false; } 应该使用 bool pos = (val > 0); // initialization Rule L-5-14:避免使用3元条件运算符 Rule L-5-15:除了在switch 块中,不要使用goto 语句 Rule L-5-16:在switch 中总是加入default 分支 Rule L-5-17:避免在条件中直接调用返回布尔...
152,195,121);}// do Ping...voidPingReply(intseq,PingpingSender,StringtargetName,byte[]buffer,inttimeout,PingOptionsoptions){// PingReplyvarreply=pingSender.Send(targetName,timeout,buffer,options);TOTAL++;// Reply from 69.192.139.91: bytes=32 time=133ms TTL=49if(reply.Status==IPStatus.Succe...
If 和 Else条件 动态网页的一个重要特点是,您可以根据条件决定做什么。 做到这一点的常用方法是使用 if ... else 语句: 实例 1 2 3 4 5 6 7 8 9 10 11 12 @{ vartxt =""; if(DateTime.Now.Hour > 12) {txt ="Good Evening";} else {txt ="Good Morning";} } The messageis@txt ...
doc = Activator.CreateInstance("System.Xml","System.Xml.XmlDocument").Unwrap() as XmlDocument; if(doc != null) Console.WriteLine(doc.GetType() + " was created at runtime"); else Console.WriteLine("Could not dynamically create object at runtime"); }catch(FileNotFoundException){ Console.Wr...
编译器强制我们写所有可能的分支，你不能在 if 上停下来，你需要 else，否则代码将无法编译，所以不可能忘记任何一个分支。在 C# 中，你有做同样事情的三元运算符，但也很容易编写不安全的代码，当你定义了一些东西，改变了它的某些部分，然后你错过了一些东西。远离熟悉的 OOP 常见情况：你有一个服务，它依赖于...
formInline.formData.batch=tt.Batch formInline.formData.valid_s=tt.BirthDate formInline.formData.serial=tt.Serial }else{ console.log('原来数据',tt,typeoftt); // 赋值操作 formInline.formData.tagid=tt } }) }catch(error) { console.log('signarl 出错'); ...
If statement [Run example] if(boolean_expression) { /* boolean expression is true */ } If else statements [Run example] if(boolean_expression) { /* boolean expression is true */ } else { /* expression is false */ } If, else if, else statements [Run example] if(boolean_expressi...
In particular, we have special treatment for switches with a nullable governing type in order to emit an IfThenElse with null-checking logic wrapping the Switch on non-null values. The DLR doesn't optimize this case and emits a chain of IfThenElse nodes rather than leveraging the switch IL...
An inline function is defined next to handle success (where we send the document's ID in response) or errors (throw an error message). Error Handling:The createDocument method attempts to queue up our document creation. If, for some reason, it can't be queued, it returns false. Our sto...
Of course, if you have ideas, let us know. Luke Hoban [MSFT] (Expert): Q: Any chances that we'll see something as inline IL (resembling C++'s inline assembly) some day in the future? C# covers most of the CLR's feature set, but there is stuff - particularly not CLI stuff - ...