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To run the example, the command syntax is: bin/hadoop jar hadoop-*-examples.jar wordcount [-m <#maps>] [-r <#reducers>] <in-dir> <out-dir> To copy data into HDFS(from local): bin/hadoop dfs -mkdir <hdfs-dir> //not required in hadoop 0.17.2 and later bin/h...

Parallel collections facilitate parallel programming by hiding low-level parallelization details. This makes taking advantage of multi-core architectures easy. Examples of parallel collections include ParArray, ParVector, mutable.ParHashMap, immutable.ParHashMap, and ParRange. A full list can be f...

Dropwizard pulls together stable, mature libraries from the Java ecosystem into a simple, light-weight package that lets you focus on getting things done. Dropwizard has out-of-the-box support for sophisticated configuration, application metrics, logging, operational tools, and much more, allowin...

Operators are listed top to bottom, in descending precedence. Operators with the same number have equal precedence and the same associativity. :: The postfix operators: [] () T(...) . -> ++ -- dynamic_cast static_cast reinterpret_cast const_cast typeid The unary prefix operators: ++ -- * ...

Web Component Tester - the tool for unit testing apps built with Polymer. You get a browser-based testing environment, configured out of the box with mocha, chai, async, lodash, sinon & sinon-chai, test-fixture, accessibility-developer-tools. WCT will run your tests against whatever browsers y...

constexpr is a keyword that can be used to mark a variable's value as a constant expression, a function as potentially usable in constant expressions, or (since C++17) an if statement as having only one of its branches selected to be compiled. The constexpr keyword was added in C++11 but for a...

Ada is an internationally standardized, high-level, object-oriented computer programming language that supports strong typing and structured programming. More information may be found here. VersionRelease DateAda 2012(TC-1)2016-04-01Ada 20122012-12-10Ada 20052007-01-01Ada 951995-12-10Ada 83198...

Content of controls can be localized using Resource files, just as this is possible in classes. For XAML there is a specific syntax, that is different between a C# and a VB application. The steps are: For any WPF project: make the resource file public, the default is internal. For C# WPF proj...

The Flash concept is taken from Ruby on Rails and provides a way to pass temporary objects between the user views generated by the faces lifecycle. As in Rails, anything one places in the flash will be exposed to the next view encountered by the same user session and then cleared out. It is import...

There is no inherent answer in C# to this - so called - need. Nonetheless there are workarounds to satisfy this need. The reason I qualify the need as "so called" is that we only need methods with 2 or more than 2 values to return when we violate good programming principals. Especially ...

The Elvis operator evaluates based on Groovy-Truth of the condition-part.