我试图在我的 Angular 5 应用程序中使用一个 .js 文件,该文件仅以 JavaScript 语言提供,所以我在 TypeScript 中找不到替代方案。
问题是我已"allowJs": true
在 tsconfig.json 中添加了 ,但错误仍然存在。我的 tsconfig.json 是:
{
"compileOnSave": false,
"compilerOptions": {
"outDir": "./dist/out-tsc",
"allowJs": true,
"baseUrl": "src",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"target": "es5",
"typeRoots": [
"node_modules/@types"
],
"lib": [
"es2016",
"dom"
]
}
}
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错误是:
'<path>/file.js' has unsupported extension. The only supported extensions are '.ts', '.tsx', '.d.ts'.
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怎么了?
我想知道当用户滚动得更快时,我怎么能避免回收者视图中的小白色"闪烁".
当然可以通过在可见屏幕之外预加载更多视图来避免闪烁
我找不到任何可以做到的事情,虽然这一定是一个非常常见的任务?
我在博客上试过这段代码:
public class PreCachingLayoutManager extends LinearLayoutManager {
private static final int DEFAULT_EXTRA_LAYOUT_SPACE = 600;
private int extraLayoutSpace = -1;
private Context context;
public PreCachingLayoutManager(Context context) {
super(context);
this.context = context;
}
public PreCachingLayoutManager(Context context, int extraLayoutSpace) {
super(context);
this.context = context;
this.extraLayoutSpace = extraLayoutSpace;
}
public PreCachingLayoutManager(Context context, int orientation, boolean reverseLayout) {
super(context, orientation, reverseLayout);
this.context = context;
}
public void setExtraLayoutSpace(int extraLayoutSpace) {
this.extraLayoutSpace = extraLayoutSpace;
}
@Override
protected int getExtraLayoutSpace(RecyclerView.State state) {
if (extraLayoutSpace …
Run Code Online (Sandbox Code Playgroud) 我正在尝试解决两个错误:
在我的Android Studio项目中运行集成测试.为了解决这个问题,我已经看到了一些答案,我的build.gradle看起来像:
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '25.0.0'
defaultConfig {
applicationId "com.ps.comunio.comuniops"
minSdkVersion 15
targetSdkVersion 23
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
debuggable true
}
}
compileOptions.with {
sourceCompatibility = JavaVersion.VERSION_1_7
targetCompatibility = JavaVersion.VERSION_1_7
}
lintOptions {
abortOnError false
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.11'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
compile 'com.loopj.android:android-async-http:1.4.9'
compile 'info.cukes:cucumber-java:1.2.0'
compile 'info.cukes:cucumber-junit:1.2.0'
androidTestCompile …
Run Code Online (Sandbox Code Playgroud) 我"18/May/2011:12:40:18 -0700"
从 Apache 日志中获取此时间戳,并且想将其转换为日期类型。我想从时间戳中提取该月的日期、月份、年份和时间。
当我尝试根据之前显示的数据创建新日期时,我收到Invalid data
来自 TS 编译器的错误消息。我认为这-0700
就是问题所在,所以我请求解决方案。
我以前从未在Stackoverflow中看到过这个具体问题,而其他问题对我没有帮助(我在打开此问题之前已经尝试过).
当我尝试以这种方式打印二进制树时:
data BinTree a = ET | Branch (BinTree a) a (BinTree a) deriving Show
ejC:: BinTree a -> String
ejC ET = ""
ejC (Branch x y z) = (ejC x) ++ "|-" ++ y ++ "-|" ++ (ejC z)
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该模块给出了这个错误:
Couldn't match expected type `[Char]' with actual type `a'
`a' is a rigid type variable bound by
the type signature for ejC :: BinTree a -> String at Types2.hs:24:7
Relevant bindings include
z :: BinTree a (bound …
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