Ruby – Ranges
Ranges occur everywhere: January to December, 0 to 9, lines 50 through 67, and so on. Ruby supports ranges and allows us to use ranges in a variety of ways…
MySQLi – ALTER Command
MySQL ALTER command is very useful when you want to change a name of your table, any table field or if you want to add or delete an existing column in a…
Ruby – Date & Time
The Time class represents dates and times in Ruby. It is a thin layer over the system date and time functionality provided by the operating system. This class may be unable on…
Ruby – Hashes
A Hash is a collection of key-value pairs like this: "employee" = > "salary". It is similar to an Array, except that indexing is done via arbitrary keys of any…
XQuery – subsequence Function
The subsequence function is used to get the sequence containing requested items present in a given sequence. Syntax subsequence($seq as item()*, $startingLoc as xs:double, $length as xs:double) Input Parameters $seq − provided sequence.…
Ruby – Arrays
Ruby arrays are ordered, integer-indexed collections of any object. Each element in an array is associated with and referred to by an index. Array indexing starts at 0, as in…
Ruby – Strings
A String object in Ruby holds and manipulates an arbitrary sequence of one or more bytes, typically representing characters that represent human language. The simplest string literals are enclosed in…
MySQLi – Transactions
A transaction is a sequential group of database manipulation operations, which is performed as if it were one single work unit. In other words, a transaction will never be complete…
Ruby – Modules and Mixins
Modules are a way of grouping together methods, classes, and constants. Modules give you two major benefits. Modules provide a namespace and prevent name clashes.Modules implement the mixin facility. Modules define a namespace, a…
XQuery – distinct-values Function
The distinct-values function is used to get the sequence containing unique items present in a given sequence. Syntax distinct-values($seq as item()*) Input Parameters $seq − provided sequence. A sequence can contain 0 or…
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