Tutorial by Topics: mr

FunctionalityRegistersdefault register""history registers"[1-9]yank register"0named registers"[a-z], "[A-Z] same as "[a-z] but appendsrecall current search pattern"/small deletes (diw, cit, ...)"-expression registers for simple math"=black hole regi...

Custom requests (or Form Requests) are useful in situations when one wants to authorize & validate a request before hitting the controller method. One may think of two practical uses, creating & updating a record while each action has a different set of validation (or authorization) rules. ...

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In database systems, isolation determines how transaction integrity is visible to other users and systems, so it defines how/when the changes made by one operation become visible to other. The phantom read may occurs when you getting data not yet commited to database. You can read the various...

A customization of the Android RangeSeekBar proposed by Alex Florescu at https://github.com/anothem/android-range-seek-bar It allows to define a step value (increment), when moving the seek bar 1- Add the increment attribute in attrs.xml <attr name="increment" format="integ...

When processing a given record, you will oft need to retrieve data from one of its related records. For example, when working with a given Sales Order, you may need to retrieve data from the related Sales Rep. In SuiteScript terminology, this is called a lookup. Lookup functionality is provided by ...

The basic thing to remember here is that debugging a Hadoop MR job is going to be similar to any remotely debugged application in Eclipse. A debugger or debugging tool is a computer program that is used to test and debug other programs (the “target” program). It is greatly useful specially for a Ha...

An R Notebook is an R Markdown document with chunks that can be executed independently and interactively, with output visible immediately beneath the input. They are similar to R Markdown documents with the exception of results being displayed in the R Notebook creation/edit mode rather than in the ...