Question

我是VBA的新手，我正在进行下面的任务

constexpr int power10(int n)
{
    if (n == 0)
        return 1;

    return 10 * power10(n - 1);
}

template <int SIZE>
constexpr int v(const char (&definition)[SIZE], int INDEX)
{
    // error: 'definition' is not a constant expression
    constexpr char c = definition[INDEX];


    if (INDEX >= 0)
    {
        if constexpr (c >= '0' && c <= '9')
        {
            return v(definition, INDEX - 1) + (power10(SIZE - INDEX - 2) * (c - '0'));
        }
        else
        {
            return 0 + v(definition, INDEX - 1);
        }
    }

    return 0;
}

template <int SIZE>
constexpr int f(const char (&definition)[SIZE])
{
    return v(definition, SIZE - 2);
}

enum operating_system : bool
{
    // error: enumerator value for 'iOS' is not an integer constant
    iOS     = f(TO_STRING(__APPLE__)),
    // error: enumerator value for 'Windows' is not an integer constant
    Windows = f(TO_STRING(__MINGW32__)),
    // error: enumerator value for 'Linux' is not an integer constant
    Linux   = f(TO_STRING(__linux__)),
};

我想从nPath = "Root\zTrash - No longer needed\NOC\NOC"删除\NOC，以便只显示nPath。

我正在使用此代码：

Root\zTrash - No longer needed

但我只得到了NOC

Answer 1

这个怎么样？

Left(nPath, InStr(nPath, "\NOC") - 1)

<小时/> 您正在使用InStrRev查找 last \ - 这不是您想要的。将InStr与\NOC一起使用，即可找到\NOC

的第一个实例

Answer 2

您可以分两个阶段完成：

java.lang.RuntimeException: Unable to start activity ComponentInfo{class path}: java.lang.IllegalArgumentException: column '_data' does not exist
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2659)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724)
   at android.app.ActivityThread.-wrap12(ActivityThread.java)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:154)
   at android.app.ActivityThread.main(ActivityThread.java:6123)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
Caused by java.lang.IllegalArgumentException: column '_data' does not exist
   at android.database.AbstractCursor.getColumnIndexOrThrow(AbstractCursor.java:333)
   at android.database.CursorWrapper.getColumnIndexOrThrow(CursorWrapper.java:87)
   at com.package.SaveImageActivity.getRealPathFromURI()
   at com.package.SaveImageActivity.onCreate()
   at android.app.Activity.performCreate(Activity.java:6672)
   at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1140)
   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2612)
   at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724)
   at android.app.ActivityThread.-wrap12(ActivityThread.java)
   at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473)
   at android.os.Handler.dispatchMessage(Handler.java:102)
   at android.os.Looper.loop(Looper.java:154)
   at android.app.ActivityThread.main(ActivityThread.java:6123)
   at java.lang.reflect.Method.invoke(Method.java)
   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)

如何从VBA中的路径中删除姓氏

2 个答案: