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Heroku/devise - Missing host to link to! Please provide :host parameter or set default_url_options[:

...nes to config/environments/production.rb in your app. . ActionMailer::Base.smtp_settings = { :address => 'smtp.sendgrid.net', :port => '587', :authentication => :plain, :user_name => ENV['SENDGRID_USERNAME'], :password => ENV['SENDG...
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How to call asynchronous method from synchronous method in C#?

... Asynchronous programming does "grow" through the code base. It has been compared to a zombie virus. The best solution is to allow it to grow, but sometimes that's not possible. I have written a few types in my Nito.AsyncEx library for dealing with a partially-asynchronous code b...
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How is OAuth 2 different from OAuth 1?

...key differences: More OAuth Flows to allow better support for non-browser based applications. This is a main criticism against OAuth from client applications that were not browser based. For example, in OAuth 1.0, desktop applications or mobile phone applications had to direct the user to open th...
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What is the difference between a HashMap and a TreeMap? [duplicate]

... To sum up: HashMap: Lookup-array structure, based on hashCode(), equals() implementations, O(1) runtime complexity for inserting and searching, unsorted TreeMap: Tree structure, based on compareTo() implementation, O(log(N)) runtime complexity for inserting and searchi...
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What is the best CSS Framework and are they worth the effort?

...ly missing the point. CSS is not like JavaScript, where you can include a base library/framework and then call functions and objects from it to do higher-level work. All a CSS framework can give you is declarative rules: some default browser-rule-reset stuff, some class styles to be forced to autho...
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Difference between Convert.ToString() and .ToString()

...tring tries to use IFormattable and IConvertible interfaces before calling base Object.ToString. Example: class FormattableType : IFormattable { private double value = 0.42; public string ToString(string format, IFormatProvider formatProvider) { if (formatProvider == null) ...
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Global and local variables in R

...erstanding how to use them: http://stat.ethz.ch/R-manual/R-devel/library/base/html/environment.html http://stat.ethz.ch/R-manual/R-devel/library/base/html/get.html Here you have a small example: test.env <- new.env() assign('var', 100, envir=test.env) # or simply test.env$var <- 100 get...
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Converting Stream to String and back…what are we missing?

...rmatted bytes". You have arbitrary bytes. You need to use something like a base-n (commonly: base-64) encode. This transfers arbitrary bytes to a formatted string a formatted string to the original bytes look at Convert.ToBase64String and Convert. FromBase64String ...
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Is there a way to disable the Title and Subtitle in Highcharts?

... Base on the document, it becomes undefined since this commit github.com/highcharts/highcharts/commit/… – foxiris Sep 23 '19 at 10:33 ...
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Get controller and action name from within controller?

... Add this to your base controller inside GetDefaults() method protected override void OnActionExecuting(ActionExecutingContext filterContext) { GetDefaults(); base.OnActionExecuting(filterContext); } private...