检查两个对象是否相等：
我不确定我的代码如何运行以及如何解决此问题。
在areEqual函数中，我正在检查两个对象的“值”。
如果它们相等-> isEqual = true-> for循环应继续 如果其中一个值不相等-> isEqual = false并退出循环。
但是我没有得到想要的结果。 我在这里完全不了解什么逻辑？
function Address (street, city, zipCode) {
this.street = street;
this.city = city;
this.zipCode = zipCode;
}
let address1 = new Address('a', 'b', 'c');
let address2 = new Address('a', 'd', 'c');
//checking for equality between two objects
function areEqual(address1, address2){
let isEqual = true;
for(let key in address1) {
if(address1[key] === address2[key])
isEqual = true;
else
isEqual = false
break;
}
if(isEqual) return 'They are equal';
else return 'They are not equal';
}
console.log(areEqual(address1, address2));
答案 0 :(得分：1)
您的代码等同于：
public void sendMessage(String message){
Log.d("TAG","message :"+message+", session id:"+sessionId);
MessageInput input = new MessageInput.Builder()
.messageType("text")
.text(message)
.build();
MessageOptions options = new MessageOptions.Builder(assistanID, sessionId)
.input(input)
.build();
assistant.message(options).enqueue(new ServiceCallback<MessageResponse>() {
@Override
public void onResponse(MessageResponse response) {
System.out.println(response);
Gson gson = new Gson();
GsonWatson gsonparse = gson.fromJson(String.valueOf(response), GsonWatson.class);
mainActivity.messageRecievedFromAssistant(gsonparse.getOutput().getGeneric().get(0).getText());
}
@Override
public void onFailure(Exception e) {
}
});
}
android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1513)
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:117)
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:105)
at java.net.InetAddress.getAllByName(InetAddress.java:1154)
at okhttp3.Dns$1.lookup(Dns.java:40)
at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:185)
at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:149)
at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:84)
at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:214)
at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
at okhttp3.RealCall.execute(RealCall.java:77)
at com.ibm.watson.developer_cloud.service.security.IamTokenManager.callIamApi(IamTokenManager.java:187)
at com.ibm.watson.developer_cloud.service.security.IamTokenManager.requestToken(IamTokenManager.java:108)
at com.ibm.watson.developer_cloud.service.security.IamTokenManager.getToken(IamTokenManager.java:78)
at com.ibm.watson.developer_cloud.service.WatsonService.setAuthentication(WatsonService.java:375)
at com.ibm.watson.developer_cloud.service.WatsonService.createCall(WatsonService.java:206)
at com.ibm.watson.developer_cloud.service.WatsonService.createServiceCall(WatsonService.java:240)
at com.ibm.watson.developer_cloud.assistant.v2.Assistant.message(Assistant.java:151)
at com.XXX.IBMwatson.sendMessage(IBMwatson.java:78)
at com.XXX.ibmwatson.MainActivity$onCreate$1.onClick(MainActivity.kt:39)
at android.view.View.performClick(View.java:6597)
at android.view.View.performClickInternal(View.java:6574)
at android.view.View.access$3100(View.java:778)
at android.view.View$PerformClick.run(View.java:25885)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
您需要将else条件包装在if (address1[key] === address2[key])
isEqual = true;
else
isEqual = false
break;
中。目前，它在第一次迭代时就跳出了循环
{}
如果格式化代码，则可以避免这些类型的错误。每个代码编辑器都有此功能的快捷方式。
注意：由于您具有function Address(street, city, zipCode) {
this.street = street;
this.city = city;
this.zipCode = zipCode;
}
let address1 = new Address('a', 'b', 'c');
let address2 = new Address('a', 'd', 'c');
let address3 = new Address('x', 'y', 'z');
let address4 = new Address('x', 'y', 'z');
//checking for equality between two objects
function areEqual(address1, address2) {
let isEqual = true;
for (let key in address1) {
if (address1[key] === address2[key])
isEqual = true;
else {
isEqual = false
break;
}
}
if (isEqual) return 'They are equal';
else return 'They are not equal';
}
console.log(areEqual(address1, address2));
console.log(areEqual(address3, address4));的构造函数，因此该代码将起作用。但是请注意，这只是检查Address中的键是否具有与address1相同的值。如果您比较一个像address2这样的空对象，它将记录areEqual({}, address2)，因为它永远不会进入They are equal循环。因此，如果for与Object.keys(address1).length
答案 1 :(得分：0)
您具有isEquls的默认值：true，因此如果任何键对都不等于将isEquls设置为false并中断循环：
function Address (street, city, zipCode) {
this.street = street;
this.city = city;
this.zipCode = zipCode;
}
let address1 = new Address('a', 'd', 'd');
let address2 = new Address('a', 'd', 'c');
//checking for equality between two objects
function areEqual(address1, address2){
let isEqual = true;
for(let key in address1) {
if(address1[key] !== address2[key])
{
isEqual = false
break;
}
}
if(isEqual) return 'They are equal';
else return 'They are not equal';
}
console.log(areEqual(address1, address2));