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Converting many 'if else' statements to a cleaner approach [duplicate]

...ke this for each converter. Then you could set up a map like this: Map<String, Converter> mimeTypeMap = new HashMap<String, Converter>(); mimeTypeMap.put("audio/mpeg", new MpegConverter()); Then your convertToMp3 method becomes like this: Converter converter = mimeTypeMap.get(mimeTy...
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In C++, is it still bad practice to return a vector from a function?

...ere are times it makes sense to pass around collection-like objects (e.g., strings) but for the example cited, I'd consider passing or returning the vector a poor idea. share | improve this answer ...
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C# DLL config file

...ionManager.OpenExeConfiguration(Assembly.GetExecutingAssembly().Location); string dllConfigData = appConfig.AppSettings.Settings["dllConfigData"].Value; share | improve this answer | ...
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Illegal mix of collations MySQL Error

...me whether this has side effects. Therefore I tried somehow to convert the string into some other format that solved the collation problem. What I found working is to do the string compare by converting the strings into a hexadecimal representation of it's characters. On the database this is done wi...
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What is Data Transfer Object?

... In general Value Objects should be Immutable. Like Integer or String objects in Java. We can use them for transferring data between software layers. If the software layers or services running in different remote nodes like in a microservices environment or in a legacy Java Enterprise Ap...
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How to convert NSNumber to NSString

So I have an NSArray "myArray" with NSNumber s and NSString s. I need them in another UIView so i go like this: 7 Ans...
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JavaScript string newline character?

...ch(/\n/) ? 'LF' : '')); } log_newline('HTML source'); log_newline('JS string', "foo\nbar"); log_newline('JS template literal', `bar baz`); <textarea id="test" name="test"> </textarea> IE8 and Opera 9 on Windows use \r\n. All the other browsers I tested (Safari 4 and Fir...
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Whether a variable is undefined [duplicate]

...ver return 'undefined' for an empty selection. It always returns an empty string (i.e. ""). .html() will return null if the element doesn't exist though.You need to do: if(page_name != '') For other variables that don't come from something like jQuery.val() you would do this though: if(typeof ...
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How do I parse a URL query parameters, in Javascript? [duplicate]

In Javascript, how can I get the parameters of a URL string (not the current URL)? 2 Answers ...
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How would I create a UIAlertView in Swift?

...should only be used when UIAlertController is not available. if NSClassFromString("UIAlertController") != nil { /* use UIAlertController * / } else { /* use UIAlertView * / } – phatblat Apr 16 '15 at 17:01 ...