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Akka or Reactor [closed]

... am in the process of starting a new project (java-based). I need to build it as a modular, distributed and resilient architecture. ...
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Is it possible to get element from HashMap by its position?

How to retrieve an element from HashMap by its position, is it possible at all? 14 Answers ...
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When to use Spring Integration vs. Camel?

...e the most sense in a recent project requiring some (JMS) messaging capabilities ( more details ). After some days working with Spring Integration it still feels like a lot of configuration overhead given the amount of channels you have to configure to bring some request-response (listening on diffe...
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Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?

...purpose of running JavaScript code. Which is better, in terms of functionality, page load speed, validation purposes, etc.? ...
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When would you use the Builder Pattern? [closed]

...e common , real world examples of using the Builder Pattern? What does it buy you? Why not just use a Factory Pattern? ...
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Is null check needed before calling instanceof?

...on is not null and the reference could be cast to the ReferenceType without raising a ClassCastException. Otherwise the result is false." So if the operand is null, the result is false. share | ...
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How do I use $scope.$watch and $scope.$apply in AngularJS?

... You need to be aware about how AngularJS works in order to understand it. Digest cycle and $scope First and foremost, AngularJS defines a concept of a so-called digest cycle. This cycle can be considered as a loop, during which AngularJS checks if there are any changes to all the variables wa...
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How does the String class override the + operator?

Why in Java you're able to add Strings with the + operator, when String is a class? In the String.java code I did not find any implementation for this operator. Does this concept violate object orientation? ...
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Distributed sequence number generation?

...bers and unique IDs that are (optionally) loosely sortable by a specific criteria (typically generation time). True sequence numbers imply knowledge of what all other workers have done, and as such require shared state. There is no easy way of doing this in a distributed, high-scale manner. You coul...
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Are 2^n and n*2^n in the same time complexity?

Resources I've found on time complexity are unclear about when it is okay to ignore terms in a time complexity equation, specifically with non-polynomial examples. ...