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Unique Constraint in Entity Framework Code First

... CreateIndex("TableName", new string[2] { "Column1", "Column2" }, true, "IX_UniqueColumn1AndColumn2"); Something like that: namespace Sample.Migrations { using System; using System.Data.Entity.Migrations; public partial class TableName_SetUniqueCompositeIndex : DbMigration { ...
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Remove a character from the end of a variable

...hich is de facto in linux distribution and in this case users may have installed different external packages which can break the portability – amenzhinsky Jul 11 '14 at 8:46 2 ...
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Run a string as a command within a Bash script

... eval is an evil command in all programming languages so use it with caution. – Krishnadas PC Jul 17 '18 at 6:50 1 ...
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Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()

...l be active processing tasks. If additional tasks are submitted when all threads are active, they will wait in the queue until a thread is available. If any thread terminates due to a failure during execution prior to shutdown, a new one will take its place if needed to execute sub...
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How to generate a random alpha-numeric string?

...er that would "likely" be unique over 500K+ generation (my needs don't really require anything much more sophisticated). ...
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Passing Data between View Controllers

...h it onto nav stack. ViewControllerB *viewControllerB = [[ViewControllerB alloc] initWithNib:@"ViewControllerB" bundle:nil]; viewControllerB.isSomethingEnabled = YES; [self pushViewController:viewControllerB animated:YES]; This will set isSomethingEnabled in ViewControllerB to BOOL value YES. P...
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惨不忍睹:说一说你最穷的时候是什么样子 - 创意 - 清泛网 - 专注C/C++及内核技术

...道   @EZ汽车人:在北京一个月吃饭花200   @贰拾壹-_- :拉屎拉一半,怕饿得快。。。。。。   类型二:不敢出门+避免社交型   @螺丝脱落司机:开启免打扰模式,然后各种宅。   @猪脚L:穷到家里待了一个星...
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Android search with Fragments

... to be a better answer: stackoverflow.com/questions/6938952/… This will allow "searching" from within Fragments. True, it's not the official search mechanism provided by Google, but it works just fine. – Kyle Falconer Aug 5 '13 at 19:19 ...
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WSAAsyncSelect模型 - C/C++ - 清泛网 - 专注C/C++及内核技术

...个窗口句柄, 套接字的通知消息将被发到此窗口中 u_int wMsg, //网络事件到来的ID,可以在WM_USER以上数值中任意指定一个值 long IEvent //指定哪些通知码需要发送 //FD_READ可以读套接字 ...
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How do I expand the output display to see more columns of a pandas DataFrame?

...: None] [currently: None] : float or None if set to a float value, all float values smaller then the given threshold will be displayed as exactly 0 by repr and friends. display.colheader_justify: [default: right] [currently: right] : 'left'/'right' Controls the justification ...