set<string> s = { "+", "-", "*", "/", ";", ",", "(", ")", "{", "}" }; bool inSet(const string& c) { return s.find(c) != s.end(); }

这段代码的作用是定义了一个包含特定字符的set集合s，并通过函数inSet判断参数c是否在集合s中。如果在集合s中，函数会返回true，否则返回false。可以这样演示这段代码：[^1]

#include <iostream>
#include <set>
#include <string>

using namespace std;

set<string> s = { "+", "-", "*", "/", ";", ",", "(", ")", "{", "}" };

bool inSet(const string& c) {
    return s.find(c) != s.end();
}

int main() {
    string test1 = "+";
    string test2 = "!";
    if (inSet(test1)) {
        cout << test1 << " is in the set." << endl; // 输出：+ is in the set.
    }
    if (!inSet(test2)) {
        cout << test2 << " is not in the set." << endl; // 输出：! is not in the set.
    }
    return 0;
}

相关问题

ObjectFactory *factory = vm->GetFactory(); JSHandle<JSArrayBuffer> arrayBuffer = JSHandle<JSArrayBuffer>::Cast(factory->NewJSArrayBuffer(length)); JSHandle<GlobalEnv> env = vm->GetGlobalEnv(); JSThread *thread = vm->GetJSThread(); JSHandle<JSFunction> current(factory->NewJSFunction(env, reinterpret_cast<void *>(BufferToStringCallback))); JSHandle<JSTaggedValue> ArrayBuffer(arrayBuffer); JSHandle<JSTaggedValue> undefined = thread->GlobalConstants()->GetHandledUndefined(); EcmaRuntimeCallInfo *info = ecmascript::EcmaInterpreter::NewRuntimeCallInfo(thread, undefined, ArrayBuffer, undefined, 1); info->SetCallArg(0, current.GetTaggedValue()); info->SetCallArg(1, arrayBuffer.GetTaggedValue()); Local<StringRef> key = StringRef::NewFromUtf8(vm, "toString"); JSHandle<JSTaggedValue> keyValue = JSNApiHelper::ToJSHandle(key); JSHandle<JSTaggedValue> currentTaggedValue(current); JSHandle<JSTaggedValue> obj(arrayBuffer); bool result = JSTaggedValue::SetProperty(vm->GetJSThread(), obj, keyValue, currentTaggedValue);修复这段代码

这段代码中存在一些问题，需要修复。修复后的代码如下：

// 获取 ObjectFactory 实例
ObjectFactory *factory = vm->GetFactory();

// 创建 JSArrayBuffer 对象
JSHandle<JSArrayBuffer> arrayBuffer = JSHandle<JSArrayBuffer>::Cast(factory->NewJSArrayBuffer(length));

// 获取 GlobalEnv 实例和 JSThread 实例
JSHandle<GlobalEnv> env = vm->GetGlobalEnv();
JSThread *thread = env->GetJSThread();

// 创建 JSFunction 对象
JSHandle<JSFunction> current(factory->NewJSFunction(env, reinterpret_cast<void *>(BufferToStringCallback)));

// 获取 JSArrayBuffer 对象和 undefined 对象的句柄
JSHandle<JSTaggedValue> arrayBufferHandle(arrayBuffer);
JSHandle<JSTaggedValue> undefined(thread->GetEcmaVM()->GetGlobalConstants()->GetHandledUndefined());

// 创建 EcmaRuntimeCallInfo 对象并设置参数
EcmaRuntimeCallInfo *info = ecmascript::EcmaInterpreter::NewRuntimeCallInfo(thread, undefined, arrayBufferHandle, undefined, 2);
info->SetFunction(current.GetTaggedValue());
info->SetCallArg(0, arrayBufferHandle.GetTaggedValue());

// 调用 SetProperty 函数将 toString 方法添加到 JSArrayBuffer 对象上
Local<StringRef> key = Local<StringRef>::Cast(factory->NewFromCanBeCompressString("toString"));
JSHandle<JSTaggedValue> keyValue = JSHandle<JSTaggedValue>::Cast(key);
JSHandle<JSTaggedValue> currentTaggedValue(current);
JSHandle<JSTaggedValue> obj(arrayBufferHandle);
bool result = JSTaggedValue::SetProperty(thread, obj, keyValue, currentTaggedValue);

修复后的代码主要做了以下几件事情：

1. 修复了获取 GlobalEnv 实例和 JSThread 实例的方法，使用了 GetJSThread() 方法。
2. 创建 EcmaRuntimeCallInfo 对象时，将 JSFunction 对象作为第一个参数传入，将 JSArrayBuffer 对象作为第二个参数传入。
3. 调用 SetProperty 函数添加 toString 方法时，将字符串 "toString" 转换成 Local<StringRef> 对象，并使用 Cast 方法转换成 JSHandle<JSTaggedValue> 对象。

FormInfo class FormInfo <<partial>> [ +Formlnfo0- button1 Click(sender:obiect, e:EventArgs) : void+ SetText(run:double, walk:double) : void Form <-- FormInfo Common class Common!+ static) map left lon : double +{static) map top lat : double +{static map right lon : double +{static' map bottom lat : double class Station { +longitute :double <<get>> <<set> >+latitude :double <<get> > <<set>> + staionname :string <<get>> <<set>> + stationlD :int <<get> > <<set>> + address :string <<get>> <<set> > + totalDocks :int <<get> > <<set> > + docksln :int <<get> > < <set> > + status : string <<get> > < <set> > Station-->"screenPoint"Point Form1 class Form1 <<partial>> !-imgH:int- imgW :int isStartSite : bool isEndSite : boolI startIndex :int- endIndex :int - isPlanRoute : bool = false- m distance : double = 0 +Form10 Form1 Shown(sender:obiect,e:EventArgs) : void panelRight SizeChanged(sender:obiect,e:EventArgs): void panelButtom SizeChanged(sender:object, e:EventArgs) : voidForm1 Paint(sender:object, e:PaintEventArgs) : void buttonlmport Click(sender:object, e:EventArgs) : void Import(fileName:string): void GPSToScreen(lon:double.lat:double): PointGetTitude(point:Point): doubel listStations SelectedlndexChanged(sender:obiect, e:EventArgs) : void panel2 Paint(sender:object, e:PaintEventArgs) : voidcheckAll Click(sender:obiect, e:EventArgs) : void comboBox1 SelectedndexChanged(sender:obiect.e:EventAras): voioDrawReqularPoly(x:float, y:float, radius:double, sideCount:int) : PointF panelMouse Paint(sender:obiect,e:PaintEventArgs) : void panelMouse MouseMove(sender:object, e:MouseEventArgs) : voidpanelMouse MouseClick(sender:object, e:MouseEventArgs) : voidbutton1 Click(sender:object, e:EventArgs) : void setRoute0:void - setWalkRoute() : void - comboBox1 TextChanged(sender:object, e:EventArgs) : void class"List1"<T>{ MapHelper class MapHelper!<<const>> EarthRadius : double = 6378.137Istatic' Rad(d:double) : double +Istatic' GetDistance(firstLatitude:double.firstLongitude:double, secondLatitude:doublesecondLongitude:double): double+Istatic1 GetPointDistance(firstPoint:string,secondPoint:string): double Form <-- Form1 Form1-->"allstation<Station>""List1"Form1-->"startPoint"Point Form1-->"endPoint"Point Form1-->"startList<PointFI>""List1" "routeList<PointFIl>""List1Form1-->Form1-->"endList<PointFIl>""List1"Form1-->"m formlnfo"FormInfo画类图

根据提供的信息，可以绘制以下类图：

+-----------------------------------+
|            FormInfo               |
+-----------------------------------+
| +Formlnfo0- button1 Click(...)    |
| +SetText(run:double, walk:double) |
+-----------------------------------+

+-----------------------------+
|            Form             |
+-----------------------------+
| <-- FormInfo                |
+-----------------------------+

+-----------------------------+
|           Common            |
+-----------------------------+
| +{static} map left lon      |
| +{static} map top lat       |
| +{static} map right lon     |
| +{static} map bottom lat    |
+-----------------------------+

+-----------------------------+
|          Station            |
+-----------------------------+
| +longitude : double         |
| +latitude : double          |
| +stationname : string       |
| +stationlD : int            |
| +address : string           |
| +totalDocks : int           |
| +docksln : int              |
| +status : string            |
| --> "screenPoint" Point     |
+-----------------------------+

+-----------------------------+
|          Form1              |
+-----------------------------+
| <-- FormInfo                |
| - imgH: int                 |
| - imgW: int                 |
| - isStartSite: bool         |
| - isEndSite: bool           |
| - startIndex: int           |
| - endIndex: int             |
| - isPlanRoute: bool = false |
| - m distance: double = 0    |
| +Form10                     |
| +Form1 Shown(...)           |
| +panelRight SizeChanged(...)|
| +panelButtom SizeChanged(...)|
| +Form1 Paint(...)           |
| +buttonlmport Click(...)    |
| +Import(fileName:string)    |
| +GPSToScreen(lon:double, lat:double): Point |
| +GetTitude(point:Point): double |
| +listStations SelectedlndexChanged(...) |
| +panel2 Paint(...)          |
| +checkAll Click(...)        |
| +comboBox1 SelectedndexChanged(...) |
| +DrawReqularPoly(...)       |
| +panelMouse Paint(...)      |
| +panelMouse MouseMove(...)  |
| +panelMouse MouseClick(...) |
| +button1 Click(...)         |
| - setRoute0:void            |
| - setWalkRoute() : void     |
| - comboBox1 TextChanged(...)|
+-----------------------------+

+-----------------------------+
|          List1<T>           |
+-----------------------------+

+-----------------------------+
|        MapHelper             |
+-----------------------------+
| <<const>> EarthRadius: double = 6378.137 |
| +static Rad(d: double): double         |
| +static GetDistance(firstLatitude: double, firstLongitude: double, secondLatitude: double, secondLongitude: double): double |
| +static GetPointDistance(firstPoint: string, secondPoint: string): double |
+-----------------------------+

请注意，这只是根据提供的信息绘制的大致类图，可能会有一些缺失或错误。