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Is it expensive to use try-catch blocks even if an exception is never thrown?

... Let's measure it, shall we? public abstract class Benchmark { final String name; public Benchmark(String name) { this.name = name; } abstract int run(int iterations) throws Throwable; private BigDecimal time() { try { int nextI = 1; i...
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Deciding between HttpClient and WebClient

... result = responseTask.Result; var readTask = result.Content.ReadAsStringAsync().Result; } private void CallGetHttpClient() { var httpClient = new HttpClient(); httpClient.BaseAddress = new Uri("https://localhost:44354/api/test/"); var responseTask = http...
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Rails migration for change column

...ata. I've run into several situations where the existing data, let's say a String can be implicitly converted into the new datatype, let's say Date. In this situation, it's helpful to know you can create migrations with data conversions. Personally, I like putting these in my model file, and then ...
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Binding ConverterParameter

...onverterBindableParameter() { } public ConverterBindableParameter(string path) { Binding = new Binding(path); } public ConverterBindableParameter(Binding binding) { Binding = binding; } #region Overridden Methods public override object ProvideV...
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How to use wait and notify in Java without IllegalMonitorStateException?

...d doSomething();. Further, you have observer or listener named onResponse(String resp) that will be called by BlackBoxClass after unknown time. The flow is simple: private String mResponse = null; ... BlackBoxClass bbc = new BlackBoxClass(); bbc.doSomething(); ... @override public void onRe...
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Java: Subpackage visibility?

...sInA in package a.b: package a; public class ClassInA{ private final String data; public ClassInA(String data){ this.data = data; } public String getData(){ return data; } protected byte[] getDataAsBytes(){ return data.getBytes(); } protected char[] getDataAsChars(){ return...
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Is there a MySQL option/feature to track history of changes to records?

...QL database. So when a field has been changed, the old vs new is available and the date this took place. Is there a feature or common technique to do this? ...
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How do I delete everything in Redis?

... one class there: public class DataCleaner { public static void main(String args[]) { String keyPattern = args[0]; String host = args[1]; int port = Integer.valueOf(args[2]); int dbIndex = Integer.valueOf(args[3]); Jedis jedis = new Jedis(host, port); ...
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Xcode can only refactor C and Objective-C code. How to rename swift class name in Xcode 6?

...'t do the same thing. For instance, Find and Replace will search inside of strings, and Refactor->Rename should not do that. – Martin Epsz Apr 30 '15 at 14:54 ...
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How to assign the output of a command to a Makefile variable

... shell is not a standard Make builtin command. This is a GNU Make builtin. – Dereckson Feb 18 '14 at 20:17 14 ...