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问题 I have types like this: type GenericType<T, K extends keyof T = keyof T> = { name: K; params: T[K] } type Params = { a: 1; b: 2; } const test: GenericType<Params> = { name: "a", params: 2 } When I create an object like test that has property name: "a" I want the type of params to be inferred so that params must be 1 . In my example params has type 1 | 2 which is Params[keyof Params] . But since name is "a" I think it should be possible to limit the type of params to just 1 without specifying

问题 i using claim in login . but it show me this error A claim of type http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier was not present on the provided ClaimsIdentity. how solve this ? public class MvcApplication : System.Web.HttpApplication { protected void Application_Start() { AreaRegistration.RegisterAllAreas(); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles); /

问题 I am using worker_threads and vm2 to implement a serverless-like thing, but I cannot get a NodeVM instance in the main thread and then pass through workData(because of worker_threads 's limitation), so I can only new NodeVM in a worker thread per request, inside which I cannot reuse a vm instance and the cost hurts. The new NodeVM() takes 200 ~ 450 ms to finish, so I wish to pre-init a reusable instance. const w = new Worker(` (async () => { const { workerData, parentPort } = require('worker

问题 I am trying to write a simple program. Vs 2019, Windows 10 64bits Debug->x64 Followed [Configure Visual C++ Projects to Target 64-Bit Platforms][1] #include <windows.h> #include "res/resource.h" #include <iostream> #include <core_api/lsproject.h> #include <core_api/lslocalworkspace.h> #include <plugin_api/lsscenecontext.h> using namespace SCENE_API; using namespace std; #include <Commdlg.h> int main() { LSString filePath; std::cout << "Hello World!\n"; } Where [LSString][2] can be found here.

问题 I am using worker_threads and vm2 to implement a serverless-like thing, but I cannot get a NodeVM instance in the main thread and then pass through workData(because of worker_threads 's limitation), so I can only new NodeVM in a worker thread per request, inside which I cannot reuse a vm instance and the cost hurts. The new NodeVM() takes 200 ~ 450 ms to finish, so I wish to pre-init a reusable instance. const w = new Worker(` (async () => { const { workerData, parentPort } = require('worker

问题 This question already has answers here : Javascript 2d array indexOf (10 answers) Closed 5 years ago . I have the following code: alert( [[0,1],[1,0]].indexOf([0,1]) ); And even though the array [0,1] is an element of the two-dimensional array, I get a value of '-1' returned. What have I done wrong in life? 回答1: It doesn't find your element because [0, 1] and [0, 1] are not equal in the same way that 4 and 4 are. console.log(4 === 4); // true console.log([0, 1] === [0, 1]); // false When you

问题 I'm using ffmpeg to scale my WEBM file, by using below command: ffmpeg -i in.webm -c:v libvpx -vf scale=100:100 out.webm The output has correct resolution as I expected but the problem is transparency become black background. Could someone give me a solution for this. Thank you so much. Below is the log of the operation: ffmpeg version 3.4 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 7.2.0 (GCC) configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib -

问题 EF Core supports a lot of different providers and I can configure them in Startup.cs by specifying the provider. For example, if I want to use SQL Server, I can use: services.AddDbContext<SomeContext>(options => { options.UseSqlServer(Configuration.GetConnectionString("SomeDatabase")); }); But the DB provider (SQL Server) seems to be hard-coded here. What I want to achieve is set the DB provider based on configuration so I can switch the DB provider based on configuration. Is there a way to

问题 EF Core supports a lot of different providers and I can configure them in Startup.cs by specifying the provider. For example, if I want to use SQL Server, I can use: services.AddDbContext<SomeContext>(options => { options.UseSqlServer(Configuration.GetConnectionString("SomeDatabase")); }); But the DB provider (SQL Server) seems to be hard-coded here. What I want to achieve is set the DB provider based on configuration so I can switch the DB provider based on configuration. Is there a way to

问题 i using claim in login . but it show me this error A claim of type http://schemas.xmlsoap.org/ws/2005/05/identity/claims/nameidentifier was not present on the provided ClaimsIdentity. how solve this ? public class MvcApplication : System.Web.HttpApplication { protected void Application_Start() { AreaRegistration.RegisterAllAreas(); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles); /