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How to add not null constraint to existing column in MySQL
...your existing column definition. For example:
ALTER TABLE Person MODIFY P_Id INT(11) NOT NULL;
A word of caution: you need to specify the full column definition again when using a MODIFY query. If your column has, for example, a DEFAULT value, or a column comment, you need to specify it in the MO...
Git conflict markers [duplicate]
...blobs (files), trees (directories) or tags have such an object name, which identifies them uniquely based on their content.
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Facebook Access Token for Pages
...accounts connection and copy your page's access_token
Click on your page's id
Add the page's access_token to the GET fields
Call the connection you want (e.g.: PAGE_ID/events)
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Access a variable outside the scope of a Handlebars.js each loop
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Try
<option value="{{id}}">{{title}} {{../externalValue}}</option>
The ../ path segment references the parent template scope that should be what you want.
shar...
Is there a way to “limit” the result with ELOQUENT ORM of Laravel?
..... it takes care of everything. Loving Laravel!
– david_nash
Feb 8 '17 at 2:26
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JS strings “+” vs concat method [duplicate]
...lt;p>The concat() method joins two or more strings</p>
<p id="demo"></p>
<p id="demo1"></p>
<script>
var text1 = 4;
var text2 = "World!";
document.getElementById("demo").innerHTML = text1 + text2;
//Below Line can't produce result
document.getElem...
Error: invalid_client no application name
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I had to re-create the OAuth Client ID and Browser Key for it to work after I selected my e-mail address and filled in a product name.
– Chris Kempen
Aug 19 '14 at 14:17
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ATL COM开发入门（一）（JS调用ActiveX/COM组件） - C/C++ - 清泛网 - 专注C/C++及内核技术
...接口方法：ConcatStr，并定义接口参数
这时，AtlDemo.idl文件中新增了一个接口：
interface IAtlDemoIf : IDispatch{
[id(1)] HRESULT ConcatStr([in] BSTR* pStr1, [in] BSTR* pStr2, [out,retval] BSTR* pRetStr);
};
AtlDemoIf.h中新增了一个公开成员函数：
S...
CreateWindow()动态创建一个EditBox - C/C++ - 清泛网 - 专注C/C++及内核技术
...了EditBox，需要处理其输入事件，如下：
先给它设置一个ID（可以在resource.h中指定）
m_wndEdit = CreateWindow(_T("EDIT"), 0, WS_CHILD | WS_VISIBLE | ES_WANTRETURN,
70, 4, 60, 16, m_hWnd, (HMENU)IDC_EDIT_SEARCH, (HINSTANCE)GetWindowLong(m_hWnd, GW...
MFC中MDI消息处理流程 - C/C++ - 清泛网 - 专注C/C++及内核技术
...为：
1) MDI主窗口(CMDIFrameWnd)收到命令消息WM_COMMAND，其ID位ID_XXX；
2) MDI主窗口将消息传给当前活动的MDI子窗口(CMDIChildWnd)；
3) MDI子窗口给自己的子窗口(View)一个处理机会，将消息交给View；
4) View检查自己Message Map；
5) ...