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Make first letter of a string upper case (with maximum performance)

...tException($"{nameof(input)} cannot be empty", nameof(input)), _ => input.First().ToString().ToUpper() + input.Substring(1) }; } C# 7 public static class StringExtensions { public static string FirstCharToUpper(this string input) { switch (input) { ...
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Execute a terminal command from a Cocoa app

... I want to run this command "system_profiler SPApplicationsDataType -xml" but i am getting this error "launch path not accessible" – Vikas Bansal Jul 29 '15 at 12:20 ...
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How to detect if multiple keys are pressed at once using JavaScript?

... could try something like this to make it easier on the eyes: function test_key(selkey){ var alias = { "ctrl": 17, "shift": 16, "A": 65, /* ... */ }; return key[selkey] || key[alias[selkey]]; } function test_keys(){ var keylist = arguments; ...
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How can I list all foreign keys referencing a given table in SQL Server?

... Not sure why no one suggested but I use sp_fkeys to query foreign keys for a given table: EXEC sp_fkeys 'TableName' You can also specify the schema: EXEC sp_fkeys @pktable_name = 'TableName', @pktable_owner = 'dbo' Without specifying the schema, the docs state ...
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Determine device (iPhone, iPod Touch) with iOS

... @AnilSivadas: UI_USER_INTERFACE_IDIOM() is safe to use in apps that still support iOS < 3.2: it is a macro in UIDevice.h specifically written to default to UIUserInterfaceIdiomPhone on such older iOS versions. – mkle...
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Start may not be called on a promise-style task. exception is coming

... Try this. private void Button_Click_2(object sender, RoutedEventArgs e) { FunctionA(); } public async void FunctionA() { await Task.Delay(5000); MessageBox.Show("Waiting Complete"); } ...
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Compelling examples of custom C++ allocators?

...nging a single std::vector<T> to std::vector<T,tbb::scalable_allocator<T> > (this is a quick and convenient way of switching the allocator to use TBB's nifty thread-private heaps; see page 7 in this document) ...
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Color text in terminal applications in UNIX [duplicate]

...[0m", and then printf(KMAG "magenta RESET \n"); – mf_ Jan 7 '14 at 19:41 2 Better yet, puts( KMA...
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Handle ModelState Validation in ASP.NET Web API

...ile services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2).ConfigureApiBehaviorOptions(options => { options.InvalidModelStateResponseFactory = (context) => { var errors = context.ModelState.Values.SelectMany(...
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How to return a 200 HTTP Status Code from ASP.NET MVC 3 controller

... job); Mapper.Map(contactViewModel, job.Contact); _db.Jobs.Add(job); _db.SaveChanges(); //you do not even need this line of code,200 is the default for ASP.NET MVC as long as no exceptions were thrown //Response.StatusCode = (int)HttpSta...