Data binding refers to the process that is used for establishing a connection between the application UI and business logic. The Two-way data binding point towards the ability of binding changes with an object’s properties to changes in the UI and vice-versa. It means if we have a user object with a name property, when we assign a new value to user.name the UI will display the new name. Similarly, if an input field is included in UI for the username then the entering of value will result in a change in the name property of the user object.
(more…)
Method getTime() returns the total number of milliseconds between midnight of January 1, 1970 and the date specified by you. The often requirement to calculate with unix timestamp.
(more…)
The push() method is used for adding one or more elements at the end of an array and returns the new length of the array. In order to add items at beginning of the array unshift() method is used. It can be used with call() or apply() with objects that are similar to arrays. The push method applies the length property to identify pint of inserting the given values. When the length property is not converted into a number 0 is used as index. This considers the possibility of length being nonexistent hence in such scenario length will be created.
(more…)
Swift is a new programming language that is purely compatible with objective C. This makes it possible to use objective C file code in Swift file. Apple claims the co-existence of Swift and Objective C in an application but, this does not relate to re-using old classes made in Objective-C whilst building new classes in Swift. The reason being as Objective-C is a platform-independent language unlike Swift is platform-dependent. Now, implementing non-platform-dependent code in Swift won’t be fruitful. henceforth, writing platform dependent code in Swift would be absolutely fine.
(more…)
Apache Spark became popular as an in-memory data processing framework that is frequently used with Hadoop. It is also very quickly transforming into a hub for building of other data-processing products. Recently released, version 2.0 of the SQL-RDBMS-on-Hadoop solution Splice Machine use Spark as either of two processing engines. Incoming work is allocation between them depends is it an OLTP or OLAP workload.
(more…)
