如何在Angular 2中取消HTTPRequest?
我知道如何拒绝请求承诺.
return new Promise((resolve, reject) => {
this.currentLoading.set(url, {resolve, reject});
this.http.get(url, {headers: reqHeaders})
.subscribe(
(res) => {
res = res.json();
this.currentLoading.delete(url);
this.cache.set(url, res);
resolve(res);
}
);
});
Run Code Online (Sandbox Code Playgroud) export declare class EventEmitter<T> extends Subject<T> {
/**
* Creates an instance of [EventEmitter], which depending on [isAsync],
* delivers events synchronously or asynchronously.
*/
constructor(isAsync?: boolean);
emit(value: T): void;
/**
* @deprecated - use .emit(value) instead
*/
next(value: any): void;
subscribe(generatorOrNext?: any, error?: any, complete?: any): any;
}
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在官方Angular 2 Typescript定义中,似乎没有办法静音或取消订阅EventEmitter.
随着页面使用相同的EventEmitter,我随着时间的推移得到了回调
这个问题不是询问如何访问像i,first,last这样的循环变量,而是如何检索和设置变量作为TEMPLATE VARIABLES.
这不行......
<div #lastElement="arr[arr.length-1]"></div>
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所以我实际上需要在组件中创建一个局部变量然后直接绑定它?
我觉得很多东西我可以用过去的ng-*指令来完成所有这些都需要在组件中进行硬编码...有点降级tbh
这是回应
not found: github.com/me/private-repo@v0.0.0-20220413034319-81fe8421f99f: invalid version: git ls-remote -q origin in /tmp/gopath/pkg/mod/cache/vcs/ea2baff0eaed39430ee011ad9a011101f13b668d5fcbd9dffdfa1e0a45422b40: exit status 128:
fatal: could not read Username for 'https://github.com': terminal prompts disabled
Confirm the import path was entered correctly.
If this is a private repository, see https://golang.org/doc/faq#git_https for additional information.
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我尝试~/.netrc使用新创建的 GitHub 个人访问令牌的密码添加记录并添加配置~/.gitconfig
[url "ssh://git@github.com/"]
insteadOf = https://github.com/
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所有这些都不起作用。
如果我禁用总和检查,那么GOSUMDB=off go mod tidy它会起作用,但我认为这对我来说不正确。
我们将数据库导入 BigQuery,但很多列的数据类型不正确,其中许多列存储为 STRING。我想通过更改 BigQuery 中的数据类型来修复它们
ALTER TABLE my.data_set.my_table ALTER COLUMN create_date SET DATA TYPE DATE;
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但我得到了
ALTER TABLE ALTER COLUMN SET DATA TYPE requires that the existing column type (STRING) is assignable to the new type (DATE)
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怎么解决呢?
https://www.elastic.co/guide/en/elasticsearch/reference/current/nested.html
考虑:
PUT my_index
{
"mappings": {
"_doc": {
"properties": {
"user": {
"type": "nested"
}
}
}
}
}
PUT my_index/_doc/1
{
"group" : "fans",
"user" : [
{
"first" : "John",
"last" : "Smith"
},
{
"first" : "Alice",
"last" : "White"
}
]
}
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当我运行无痛脚本时:
ctx._source.user.add({
"first" : "Foo",
"last" : "Bar"
})
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它不工作。我试过了,但找不到任何相关文件或其他人发起的讨论。
Docker文件
FROM odoo:12.0
# Setup with root
USER root
# Set default user when running the container
USER odoo
# Copy source code to image
COPY ./addons/ /mnt/extra-addons/
EXPOSE 8069
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docker-compose.yml
version: '3.2'
services:
odoo:
build: .
depends_on:
- db
ports:
- "8069:8069"
environment:
- HOST=db
- USER=odoo
- PASSWORD=myodoo
- ENV=test
entrypoint: ['/entrypoint.sh', '--database=odoo', '--dev=all']
volumes:
- ./addons:/mnt/extra-addons
- ./var:/var/lib/odoo
db:
image: postgres:10
ports:
- "5433:5432"
environment:
- POSTGRES_DB=odoo
- POSTGRES_USER=odoo
- POSTGRES_PASSWORD=myodoo
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如何使用 PyCharm 调试 docker 内的 Odoo …
在RootModule:
@NgModule({
imports: [
ModuleA
],
declarations: [
ScrollToWhen
],
bootstrap: [BootComponent],
})
class RootModule {}
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在模块A中的一个组件模板中,我使用了ScrollToWhen,但是我收到了错误:Can't bind to 'scrollToWhen' since it isn't a known property of 'div'.
为什么?
Error: Unexpected directive 'HbClass' imported by the module 'Module'
new BaseListState<BrandCriteria, Brand>()
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这是有效的,我添加
export type BrandListState = BaseListState<BrandCriteria, Brand>;
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然后
new BrandListState()
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这是不允许的。有办法解决这个问题吗?
内部对象构造函数:
this.notification.addEventListener(barcodeScanner.NEW_READING, this.handleBarcode.bind(this));
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当它失败时:
this.notification.removeEventListener(barcodeScanner.NEW_READING, this.handleBarcode.bind(this), this);
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我可以添加事件监听器并正常工作,但是当对象销毁时我无法删除单个事件监听器.
虽然它与问题没有多大关系,但我使用的是EventDispatcher.js和Class.js.
我可以修改EventDispatcher.js中的代码以满足我的需要.但是如何在不删除所有其他侦听器的情况下删除objcet函数的事件侦听器?
angular ×4
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http ×1
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odoo ×1
promise ×1
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