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jquery if div id has children

... If you add a selector to children, you can also check if an element has children that match a particular selector, like if you want to see if an element has a child of a particular class. – Muhd May ...
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JQuery: 'Uncaught TypeError: Illegal invocation' at ajax request - several elements

I have two select elements, A and B: when A's selected option changes, B's options must be updated accordingly. Each element in A implies many elements in B, it's a one-to-many relationship (A contains nations, B should contain cities located in the given nation). ...
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How to perform .Max() on a property of all objects in a collection and return the object with maximu

...c T MaxObject<T,U>(this IEnumerable<T> source, Func<T,U> selector) where U : IComparable<U> { if (source == null) throw new ArgumentNullException("source"); bool first = true; T maxObj = default(T); U maxKey = default(U); foreach (var ...
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how to put focus on TextBox when the form load?

... You could try: MyTextBox.Select(); According to the documentation: The Select method activates the control if the control's Selectable style bit is set to true in ControlStyles, it is contained in another control, and all its parent controls...
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How to call Stored Procedure in Entity Framework 6 (Code-First)?

...Campaign] @ClientId int AS BEGIN SET NOCOUNT ON; SELECT AgeGroup, Gender, Payout FROM IntegrationResult WHERE ClientId = @ClientId END create a class that looks like: public class ResultForCampaign { public string AgeGroup { get; set; } ...
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Disable developer mode extensions pop up in Chrome

... Extensions Double click Configure extension installation whitelist policy Select Enabled, and click Show In the list, enter the ID(s) of the extensions you noted in Step 7 Click OK and restart Chrome. That's it! EDIT: As of July 2018, this approach no longer works: it seems Google has stopped ho...
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How can I define a composite primary key in SQL?

...for the table and neither value can be NULL. If you do a query like this: SELECT * FROM voting WHERE QuestionID = 7 it will use the primary key's index. If however you do this: SELECT * FROM voting WHERE MemberID = 7 it won't because to use a composite index requires using all the keys from th...
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Unable to update the EntitySet - because it has a DefiningQuery and no element exis

...ollowed to solve the problem as following: Right click on the edmx file, select Open with, XML editor Locate the entity in the edmx:StorageModels element Remove the DefiningQuery entirely Rename the store:Schema="dbo" to Schema="dbo" (otherwise, the code will generate an error saying the name is i...
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Text editor to open big (giant, huge, large) text files [closed]

... for quick scripts, and its .. (range flip-flop) operator makes for a nice selection mechanism to limit the crud you have to wade through. For example: $ perl -n -e 'print if ( 1000000 .. 2000000)' humongo.txt | less This will extract everything from line 1 million to line 2 million, and allow you ...
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Custom Cell Row Height setting in storyboard is not responding

...cally because this answer applies to Interface Builder/Storyboards. If you select the cell in IB, then the Size Inspector shows Row Height at the top (with a "custom" checkbox), but if you select the whole table view the Size Inspector shows Row Height at the top there too (no "custom" in this case)...