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What is `params.require(:person).permit(:name, :age)` doing in Rails 4?

...tionController::Parameters, which provides several methods such as require m>andm> permit. The require method ensures that a specific parameter is present, m>andm> if it's not provided, the require method throws an error. It returns an instance of ActionController::Parameters for the kem>ym> passed into requi...
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VC/MFC 临界区域使用方法实例 - C/C++ - 清泛网 - 专注C/C++及内核技术

VC/MFC 临界区域使用方法实例临界区域的作用:避免临界区域内的数据(一般为共享的资源)被不同的线程同时访问,实现线程的同步操作。保证只能由先进入临界区域的一个线程...临界区域的作用:避免临界区域内的数据(一般为...
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选中CListCtrl指定行并发送LVN_ITEMCHANGED消息 - C/C++ - 清泛网 - 专注C/C++及内核技术

选中CListCtrl指定行并发送LVN_ITEMCHANGED消息在使用CListCtrl列表控件的程序中,当我们修改了CListCtrl后需要要定位到已修改的行,可以使用下面的函数实现: 定位并使指定行选中m_list...在使用CListCtrl列表控件的程序中,当我们修改...
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cgridctrl 单元格下拉,单元格事件 - C/C++ - 清泛网 - 专注C/C++及内核技术

...据选中的数据进行联动,但是这个下拉框是一个CGridCellCombo对象,无法直接为它绑定事件。这时我们可... cgridctrl单元格下拉框选中后,需要根据选中的数据进行联动,但是这个下拉框是一个CGridCellCombo对象,无法直接为它绑定事...
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Linux iptables防火墙开放mm>ym>sql、apache的端口 - 操作系统(内核) - 清泛网 ...

Linux iptables防火墙开放mm>ym>sql、apache的端口vi etc sm>ym>sconfig iptables 修改配置,添加两条tcp端口允许的记录:[root@iZ23rlmiwviZ ~] cat etc sm>ym>sconfig iptables sample configuration for iptables service vi /etc/sm>ym>sconfig/iptables 修改配置,添加两条tcp端口允许...
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CreateWindow()动态创建一个EditBox - C/C++ - 清泛IT论坛,有思想、有深度

本帖最后由 zqp2013 于 2015-1-4 16:21 编辑 在Win32代码或MFC代码中动态创建一个EditBox: 在OnInitDialog()函数中:         // 创建EditBox         HWND m_wndEdit = CreateWindow(_T("EDIT"), 0, WS_C...
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PHP sprintf escaping %

... postfix: "", imageUploader: { brm>andm>ingHtml: "Powered bm>ym> \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
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Avoiding memorm>ym> leaks with Scalaz 7 zipWithIndex/group enumeratees

... postfix: "", imageUploader: { brm>andm>ingHtml: "Powered bm>ym> \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9....
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How do I set up a basic Rubm>ym> project?

...o create a small Rubm>ym> project with 10 ~ 20 classes/files. I need some gems m>andm> I want to use RSpec as test framework. 4 Ans...
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Regular expression for a string that does not start with a sequence

...ertion: (^.{1,3}$|^.{4}(?<!tbd_).*) Or just plain old character sets m>andm> alternations: ^([^t]|t($|[^b]|b($|[^d]|d($|[^_])))).* share | improve this answer | follow ...