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Are there strongly-typed collections in Objective-C?

...will generate compiler warnings if there is a type mismatch. NSArray<NSString*>* arr = @[@"str"]; NSString* string = [arr objectAtIndex:0]; NSNumber* number = [arr objectAtIndex:0]; // Warning: Incompatible pointer types initializing 'NSNumber *' with an expression of type 'NSString *' And...
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How to hide action bar before activity is created, and then show it again?

... super.onPostResume(); getActionBar().hide(); but it may need some extra logic to check if this is the first showing of the Activity. The idea is to delay a little the hiding of the ActionBar. In a way we let the ActionBar be shown, but then hide it immediately. Thus we go beyond the first ...
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Hidden Features of MySQL

... Binary Protocol: MySQL 4.1 introduced a binary protocol that allows non-string data values to be sent and returned in native format without conversion to and from string format. (Very usefull) Aside, mysql_real_query() is faster than mysql_query() because it does not call strlen() to opera...
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Android notification is not showing

...ome obsoletes if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { String channelId = "Your_channel_id"; NotificationChannel channel = new NotificationChannel( channelId, "Channel human readable title", ...
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Nesting await in Parallel.ForEach

...can Post() each id to the TransformBlock. In code: var ids = new List<string> { "1", "2", "3", "4", "5", "6", "7", "8", "9", "10" }; var getCustomerBlock = new TransformBlock<string, Customer>( async i => { ICustomerRepo repo = new CustomerRepo(); return awa...
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LINQPad [extension] methods [closed]

...g Disassemble() disassembles any method to IL, returning the output in a string: typeof (Uri).GetMethod ("GetHashCode").Disassemble().Dump(); In addition to those two extension methods, there are some useful static methods in LINQPad.Util. These are documented in autocompletion, and include: ...
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Writing/outputting HTML strings unescaped

... Supposing your content is inside a string named mystring... You can use: @Html.Raw(mystring) Alternatively you can convert your string to HtmlString or any other type that implements IHtmlString in model or directly inline and use regular @: @{ var myHtml...
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How to pass html string to webview on android

...sing xml and then loading it to web view, after parsing I am creating four strings so that I could append all string to one view. I am able to get two views on the web view but not the first two strings. ...
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Get users by name property using Firebase

...or (DataSnapshot datas : dataSnapshot.getChildren()) { String name=datas.child("name").getValue().toString(); } } @Override public void onCancelled(DatabaseError databaseError) { } }); Using Firebase in Javascri...
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Update Row if it Exists Else Insert Logic with Entity Framework

...pouse. public class Person { public int Id { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public string MiddleName { get; set; } public int Age { get; set; } public int DocumentId {get; set;} public virtual ICollection&lt...