小编hey*_*rne的帖子

鉴于以下代码:

(map Integer/parseInt ["1" "2" "3" "4"])

为什么我得到以下异常,除非我包装Integer/parseInt匿名函数并手动调用它(#(Integer/parseInt %))？

clojure.lang.Compiler$CompilerException: java.lang.RuntimeException: Unable to find static field: parseInt in class java.lang.Integer

我正在尝试使用CollapsingToolbarLayout内部a 实现布局DrawerLayout.整体acitivty_main.xml看起来像这样:

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/activity_main__drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!-- The CoordinatorLayout is used to coordinate (rly) scroll events between different views -->
    <android.support.design.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <!-- The AppBar (everything above the scrolling content) -->
        <android.support.design.widget.AppBarLayout
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            android:id="@+id/activity_main__app_bar"
            android:fitsSystemWindows="true"
            app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

            <android.support.design.widget.CollapsingToolbarLayout
                android:id="@+id/activity_main__collapsing_toolbar"
                android:layout_width="match_parent"
                android:layout_height="@dimen/appbar_size_expanded"
                android:minHeight="?attr/actionBarSize"
                app:expandedTitleMarginEnd="16dp"
                app:expandedTitleMarginStart="72dp"
                app:expandedTitleMarginBottom="32dp"
                app:expandedTitleTextAppearance="@style/ExpandedAppBarTitle"
                app:contentScrim="?attr/colorPrimary"
                app:layout_scrollFlags="scroll|exitUntilCollapsed">

                <android.support.v7.widget.Toolbar
                    android:id="@+id/activity_main__toolbar"
                    android:layout_height="?attr/actionBarSize"
                    android:layout_width="match_parent"
                    android:fitsSystemWindows="true"
                    android:background="?attr/colorPrimary"
                    app:layout_collapseMode="pin"
                    app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

            </android.support.design.widget.CollapsingToolbarLayout>

        </android.support.design.widget.AppBarLayout>

        <!-- The scrolling content view -->
        <android.support.v4.widget.NestedScrollView
            android:id="@+id/activity_main__content_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#CCC333"
            app:layout_behavior="@string/appbar_scrolling_view_behavior" …

我正在尝试将华丽的Kotlin和SugarORM结合使用以进行Android开发,并让我的模型设置如下:

import com.orm.SugarRecord

public class Contact : SugarRecord<Contact>() {
    var name : String = ""
    var phoneNumber : String = ""
    var info : String? = null
}

当然我也改变了AndroidManifest.xml:

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme"
    tools:replace="android:icon"
    android:name="com.orm.SugarApp">

    <meta-data android:name="DATABASE" android:value="database.db" />
    <meta-data android:name="VERSION" android:value="1" />
    <meta-data android:name="QUERY_LOG" android:value="true" />
    <meta-data android:name="DOMAIN_PACKAGE_NAME" android:value="/* same as package attribute on manifest element */" />

    <activity>…</activity>
</application>

现在我正在尝试使用里面的模型MainActivity.kt:

override fun onCreateOptionsMenu(menu: Menu?): Boolean {
    val contacts = Contact.listAll(javaClass(Contact))
    // or val …

我目前正在处理服务器发送的事件，我的伪代码如下所示：

var listeners = [];
app.get('/stream', function (req, res) {
    listeners.push({ req: req, res: res });
});

// ... something happens
notify(listeners);

现在这实际上工作得很好，但是我如何知道客户端何时关闭浏览器窗口，这样我最终就不会耗尽内存？我是否必须管理这个客户端，或者是否有一些req.on('close', fn);我找不到？

提前致谢。:)