我想一个转换bool
称为isExist
一个string
(true
或false
使用)string(isExist)
,但它不工作.在Go中这样做的惯用方法是什么?
如果我运行脚本,控制台会显示"THREE.OrbitControls不是构造函数".
我错了什么?我使用了手册中的相同代码.
var controls;
controls = new THREE.OrbitControls( camera );
controls.addEventListener( 'change', render );
var render = function () {
requestAnimationFrame( render );
renderer.render(scene, camera);
//Hier wird die Größe des Fensters manipuliert!
renderer.setSize(window.innerWidth - 20, window.innerHeight - 20);
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};
var animate = function () {
requestAnimationFrame( animate );
controls.update();
};
var geometry1 = new THREE.BoxGeometry( 10, 10, 10);
var material = new THREE.MeshPhongMaterial( {specular: "#fdfb57", color: "#d8d613", emissive: "#6b6a0d", side: THREE.DoubleSide} );
var box = new THREE.Mesh(geometry1, material);
scene.add(box);
camera.position.z …
Run Code Online (Sandbox Code Playgroud) 我想让我的.fxml应用程序无法调整大小,但我无法取消选中任何anchorPanes上的"Resizeable"复选框,该选项显示为灰色.即使在一个新的,完全空的项目上也会发生同样的事情.
Product Version
JavaFX Scene Builder 1.1
Build Information
Version: 1.1-b35, Changeset: 50e3d7cdf394
Date: 2013-08-27 10:45
Run Code Online (Sandbox Code Playgroud) 我只是想修改一个可拖动div 的在线示例,这是我想要的.最后,我得到了这个.有人可以给我一些修改它的提示吗?
JSFiddle链接:https://jsfiddle.net/casperhongkong/omekvtka/14/
HTML
<div class="container">
<div class="area1">
Area 1
</div>
<div class="drag">
</div>
<div class="area2">
Area 2
</div>
</div>
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CSS
.container {
position: fixed;
top: 51px;
right: 0px;
bottom: 0px;
left: 0px;
background-color: #272822;
border: 1px solid #222;
// margin: 0 auto;
//display: inline-block;
}
.area1 {
position: absolute;
height: 100%;
width: 30%;
background-color: #ddd;
display: inline-block;
}
.drag {
position: fixed;
width: 5px;
height: 100%;
background-color: #444;
display: inline-block;
}
.area2 …
Run Code Online (Sandbox Code Playgroud) 我想初始化分离器手柄位置,如下所示,而不是在中间.我不能在房产中设置它.
怎么解决这个?
谢谢您的帮助.
我现在有一个函数handleRightClick(e)
,当我右键单击容器时将调用该函数.在容器内部,有几个Item
s,我希望只有当我右键单击其中一个时才会显示菜单Item
.
export default class ProjectContainer extends React.Component {
...
handleRightClick(e) {
console.log(e.target.name); // I want to check the event target whether is `Item` Class.
this.refs.rightClickMenu.reShow(e.clientX, e.clientY); // This will open the right click menu.
}
...
render() {
return (
<div style={styles.root} onContextMenu={this.handleRightClick} onClick={this.handleLeftClick}>
<Item /><Item /><Item /><Item /><Item /><Item /><Item />
<RightClickMenuForProjectItem ref='rightClickMenu'/>
</div>
);
}
}
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如果我console.log(e)
,我在Chrome控制台中得到这个:
> Object {dispatchConfig: Object, _targetInst: ReactDOMComponent, _dispatchInstances: ReactDOMComponent, nativeEvent: MouseEvent, type: "contextmenu"…}
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这是班级 …
我想将self
结构对象传播到线程中,然后调用其time_tick()
方法来增加 HMS 时间。
pub fn start(&mut self) {
self.acti = true; // the time tick is activated now...
thread::spawn(move || {
let local_self: *mut Self = self; // this self live in the thread
loop {
thread::sleep(Duration::from_secs(1)); // wait for 1 sec
if (*local_self).acti == true { (*local_self).time_tick(); }
(*local_self).print_time(); // for debug
}
});
}
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我收到错误消息:
error[E0495]: cannot infer an appropriate lifetime due to conflicting requirements
--> src/hmstimer/mod.rs:42:17
|
42 | thread::spawn(move || {
| …
Run Code Online (Sandbox Code Playgroud) 我正在写蓝牙客户端,我有一个问题.我的第一个活动显示在ListView中启用了设备.单击此列表中的某个项目时,它应该启动新活动并在那里传递BluetoothDevice对象.我写的是这样的:
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub
if(btAdapter.isDiscovering()) {
btAdapter.cancelDiscovery();
}
if(listAdapter.getItem(position).contains("Paired")) {
BluetoothDevice selectedDevice = devices.get(position);
Intent intent = new Intent (this, BTActivity.class);
intent.putExtra("btdevice", selectedDevice);
startActivity(intent);
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是否可以将BluetoothDevice对象传递给另一个活动?如何在新活动中提取此对象?
对不起我的英语不好.如果事情不明确,我会尝试更好地解释.
看完这个视频,我自己试了一下。但是,我收到了恐慌错误panic: open templates/index.html: The system cannot find the path specified.
完整的错误消息,如下所示。
Hello, Go Web Development 1.3
panic: open templates/index.html: The system cannot find the path specified.
goroutine 1 [running]:
panic(0x789260, 0xc082054e40)
F:/Go/src/runtime/panic.go:481 +0x3f4
html/template.Must(0x0, 0xe34538, 0xc082054e40, 0x0)
F:/Go/src/html/template/template.go:340 +0x52
main.main()
E:/Users/User/Desktop/codespace/go_workspace/src/go-for-web-dev/src/1.3_UsingTemplate.go:11 +0x20d
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我尝试了不同的字符串,如"templates/index.html"
, "index.html"
, "./template/index.html"
... 另外,我尝试将整个模板文件夹复制到pkg
, bin
...但我收到相同的错误消息。
下面是go程序(1.3_UsingTemplate.go)。
package src
import (
"fmt"
"net/http"
"html/template"
)
func main() {
fmt.Println("Hello, Go Web Development 1.3")
templates := template.Must(template.ParseFiles("templates/index.html")) //This line should …
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