标签: export

我在模块中定义了一个类:

"use strict";

var AspectTypeModule = function() {};
module.exports = AspectTypeModule;

var AspectType = class AspectType {
    // ...    
};

module.export.AspectType = AspectType;

但是我收到以下错误消息:

TypeError: Cannot set property 'AspectType' of undefined
    at Object.<anonymous> (...\AspectType.js:30:26)
    at Module._compile (module.js:434:26)
    ....

我该如何导出这个类并在另一个模块中使用它？我已经看到了其他SO问题,但是当我尝试实现他们的解决方案时,我收到了其他错误消息.

是否可以MS SQL Server 2008将数据库结构导出到T-SQL文件中？

我不仅要导出表模式,还要导出主键,外键,约束,索引,存储过程,用户定义的类型/函数.

此外,我不希望数据出现在此T-SQL文件中.

有没有办法实现这一目标？

我的电脑坏了但幸运的是我备份了文件夹C:\ Program Files\PostgreSQL.

现在我在一台新计算机上工作,我想导入以前存储在外部磁盘中的Postgres数据库.

我想导出位于备份文件夹中的特定数据库的架构.

该文件PostgreSQL\8.3\data\global\pg_database包含有关数据库及其OID的信息; 例如:

"db1" 20012
"db2" 23456

我想导出"db1"的架构.

文件夹中有一个名为"20012"的文件夹"PostgreSQL\8.3\data\base\20012" ,其中包含大量文件[500个文件].

有没有办法导出该数据库的架构？

请注意,所有Postgresql数据库文件都位于外部硬盘中,我想将该数据库的模式导出到SQL文件中,获取该文件,运行它并在本地创建相同的精确数据库.

我正在尝试使用这些说明设置Discourse开发环境.但是,当我运行Vagrant时,我得到错误:

NFS报告您的导出文件无效.在对文件进行任何更改之前,Vagrant会进行此检查.请更正以下问题并执行"vagrant reload":

无法打开/ etc/exports

我查了一下,而且我没有etc/exports文件夹,所以我创建了一个并运行了vagrant reload.这让我:

/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/hosts/bsd/host.rb:146:in read': Is a directory - /etc/exports (Errno::EISDIR) from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/hosts/bsd/host.rb:146:innfs_prune'来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/ plugins/synced_folders/nfs/synced_folder.rb:68:in cleanup' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/synced_folder_cleanup.rb:24:inblock in call'from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/synced_folder_cleanup.rb:22:in each_key' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/synced_folder_cleanup.rb:22:in来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/prepare_nfs_valid_ids.rb:12:incall' .1/lib/vagrant/action/warden.rb:34:call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/handle_forwarded_port_collisions.rb:118:in来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/prepare_forwarded_port_collision_params.rb:30:in来电'来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/env_set.rb:19:in来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4. 1/lib/vagrant/action/warden.rb:34:call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/builtin/provision.rb:52:in来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/clear_forwarded_ports.rb:13:incall'来自/ Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/set_name.rb:19:in来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34 :call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/clean_machine_folder.rb:17:in来自/Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:34:in call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/plugins/providers/virtualbox/action/check_accessible.rb:18:in来自/ Applications/Vagrant/embedded/gems/gems/vagrant -1.4.1/lib/vagrant/action/warden.rb:34:inizeize_action call' from /Applications/Vagrant/embedded/gems/gems/vagrant-1.4.1/lib/vagrant/action/warden.rb:95:in' …

假设我有一个module(./my-module.js),它有一个应该是其返回值的对象:

let values = { a: 1, b: 2, c: 3 }

// "export values" results in SyntaxError: Unexpected token

所以我可以导入它们:

import {a} from './my-module'           // a === 1
import * as myModule from './my-module' // myModule.a === 1

我发现的唯一方法是硬编码出口:

export let a = values.a
export let b = values.b
export let c = values.c
// or:
export let {a, b, c} = values

哪个不是动态的.

是否可以从对象中导出所有值？

请告诉我如何在父shell(bash,sh或ksh)中导出函数,以便该函数可用于从父进程启动的所有子进程？

是否有可能在Haskell中编写一个模块,除了导出内部可见的内容之外,还会重新导出模块？

让我们考虑以下模块:

module Test where
import A

f x = x

此模块导出内部定义的所有内容,因此它会导出f但不会重新导出从中导入的任何内容A.

另一方面,如果我想重新导出模块A:

module Test (
    module A,
    f
) where
import A

f x = x

有没有办法重新导出A和导出定义的所有内容,Test而无需显式编写在其中定义的每个函数Test？

我已经看到ES6模块的公共出口有以下两种方式:

// method 1
export var getAnswer = function () { return 'forty two'; };

// method 2
export default function () { return 'forty two'; };

1. 这两个都有效吗？
2. 如果是这样,为什么它们都存在？
3. 是否有其他有效的模块导出选项使用ES6语法？

我很惊讶我用googlefu找不到答案.我只关心ES6模块,不是 CommonJS,RequireJS,AMD,Node等.

我有一个MySQL数据库,我试图找到一种方法只导出其结构,没有自动增量值.mysqldump --no-data几乎可以完成这项工作,但它保留了auto_increment值.有没有办法不使用PHPMyAdmin(我知道它可以做到)？

你好,我是phpexcel的新手,我想知道是否有某种方式将我创建的excel发送到客户端下载而不保存在我的服务器上或者在下载后立即将其删除

我正在尝试在页面上创建一个"导出按钮",该页面将为用户提供他想要我刚刚创建的excel的"弹出窗口".

现在我创建表后,我做:

$objXLS->getActiveSheet()->getColumnDimension("A")->setAutoSize(true);
$objXLS->getActiveSheet()->getColumnDimension("B")->setAutoSize(true);

$objXLS->getActiveSheet()->setTitle('Test Stats');

$objXLS->setActiveSheetIndex(0);

$objWriter = PHPExcel_IOFactory::createWriter($objXLS, 'Excel5');
$objWriter->save(__DIR__."/test1.xls");

但是它将它保存到我的服务器上

谢谢