小编Lor*_*ing的帖子

我有一个带有身份验证功能的服务 -

authenticate(username: string, password: string) {
        let ret;
        let packet = JSON.stringify({
            username: username,
            password: password
        });

        let headers = new Headers();
        headers.append('Content-Type', 'application/json');

        this.http.post('http://localhost:5000/api/authenticate/', packet, {
            headers: headers
        })
        .map(res => res.json())
        .subscribe(
            data => { 
                // put return data into ret
                ret = data.token;
            },
            err => console.log(err),
            () => {
                // this works!
                console.log(ret);
            }
        );

        // get's returned before I put data into it
        return ret;
    }

因此,如果我调用authenticate函数console.log(authenticate('a', 'b'));,它会记录,undefined因为ret在subscribe函数将数据放入其中之前返回变量.如何从authenticate函数返回http响应数据？我之前从未对RxJS进行过任何反应式编程,而这正是角度2似乎正在使用的. …

我有这个(主要的父母)组件 -

@RouteConfig([
    { path: '/', name: 'ProjectList', component: ProjectListComponent, useAsDefault: true },
    { path: '/new', name: 'ProjectNew', component: ProjectFormComponent },
    { path: '/:id', name: 'ProjectDetail', component: ProjectDetailComponent },
    { path: '/:id/issues/...', name: 'Issue', component: IssueMountComponent },
])
class ProjectMountComponent {
}

然后我有第二个mount组件(主父的子代,下一个组件的父代)

@Component({
        template: `
        <div><router-outlet></router-outlet></div>
    `,
        directives: [RouterLink, RouterOutlet]
})
@RouteConfig([
        { path: "/", name: "IssueList", component: IssueListComponent, useAsDefault: true },
])
class IssueMountComponent {
    constructor(private _routeParams: RouteParams) {
    }
}

在这里,我可以毫无问题地访问routeParams(:id).现在,这是我需要:id来自uri 的值的组件.

@Component({
        template: ` …

我现在有以下模板

<project-form [nextId]="projects.length" (newProject)="addProject($event)"></project-form>
<project-list [projects]="projects"></project-list>

在ProjectAppComponent中.

class ProjectAppComponent {
    projects: Project[] = [
        { id: 0, title: "Build the issue tracker" },
        { id: 1, title: "Basecamp" },
    ]

    addProject(project: Project) {
        this.projects.push(project);
    } 
}

ProjectAppComponent具有项目数组和将新项目推入其中的方法.我想创建子路由项目的形式和项目名单,所以我可以做的/projects/new,并/projects/show表现出任何形式或列表.我创建了这样的路线配置 -

@Component({
    template: `
        <div>
            <router-outlet></router-outlet>
        </div>
    `,
    directives: [ RouterOutlet ]
})
@RouteConfig([
    { path: '/list', name: 'ProjectList', component: ProjectListComponent, useAsDefault: true },
    { path: '/new', name: 'ProjectForm', component: ProjectFormComponent },
])
class ProjectAppComponent {
    projects: Project[] = …

ruby中的大多数会话固定主题主要与rails相关.sinatra中是否存在任何会话固定漏洞？在rails中,我们主要建议在分配会话之前执行reset_session.我们如何防止sinatra中的会话固定？

我已经开始使用clojure core.async库了.我发现CSP,channel,go blocks的概念非常容易使用.但是,我不确定我是否正确使用它们.我有以下代码 -

(def x-ch (chan))
(def y-ch (chan))
(def w1-ch (chan))
(def w2-ch (chan))

; they all return matrices
(go (>! x-ch (Mat/* x (map #(/ 1.0 %) (max-fold x)))))
(go (>! y-ch (Mat/* y (map #(/ 1.0 %) (max-fold y)))))
(go (>! w1-ch (gen-matrix 200 300)))
(go (>! w2-ch (gen-matrix 300 100)))

(let [x1 (<!! (go (<! x-ch)))
        y1 (<!! (go (<! y-ch)))
        w1 (<!! (go (<! w1-ch)))
        w2 (<!! (go (<! w2-ch)))]

    ;; do stuff w/ …

这是我的来源

package com.effect.bio;

import com.badlogic.gdx.ApplicationListener;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.Mesh;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.maps.tiled.TiledMap;
import com.badlogic.gdx.maps.tiled.TiledMapTileLayer;
import com.badlogic.gdx.maps.tiled.TmxMapLoader;
import com.badlogic.gdx.maps.tiled.renderers.OrthogonalTiledMapRenderer;
import com.badlogic.gdx.math.Rectangle;

public class AppController implements ApplicationListener { 
    static final int WIDTH = 480;
    static final int HEIGHT = 320;

    private OrthographicCamera camera;
    private SpriteBatch batch;
    private Texture texture;
    private Sprite sprite;
    private Mesh mesh;
    private Rectangle glViewport;
    private float rotationSpeed;

    TiledMap map;
    TiledMapTileLayer layer;
    OrthogonalTiledMapRenderer renderer;

    @Override
    public void create() …

说我有一个mongoid类

Class User
    include Mongoid::Document
    field :username, type: String
    field :age, type: Integer

    before_save :remove_whitespace

    def remove_whitespace
        self.username.strip!
        self.age.strip!
    end
end

在方法中remove_whitespace; 有没有更好的方法迭代所有字段使用块和迭代器去除它们而不是单独键入每个字段(self.username.strip!)？我班上有大约15个领域,正在寻找一个优雅的解决方案.