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Function([DISTINCT] expression) -DISTINCT is an optional parameter AVG ( [ ALL | DISTINCT ] expression ) COUNT( { [ALL | DISTINCT ] expression ] | * } ) GROUPING(<column_expression>) MAX ( [ ALL | DISTINCT ] expression ) MIN ( [ ALL | DISTINCT ] expression ) SUM ( [ ALL | DISTINCT ] e...

This section provides an overview of what design-patterns is, and why a developer might want to use it. Examples may provide a graphical representation of the pattern, a scenario consisting of a problem given a context in which a pattern can be used and mention possible trade offs. It should also...

When storing and transforming data for humans to see, string formatting can become very important. Python offers a wide variety of string formatting methods which are outlined in this topic. "{}".format(42) ==> "42" "{0}".format(42) ==> "42" &quo...

The Go compiler can produce binaries for many platforms, i.e. processors and systems. Unlike with most other compilers, there is no specific requirement to cross-compiling, it is as easy to use as regular compiling. GOOS=linux GOARCH=amd64 go build Supported Operating System and Archite...

An operator is a character that represents an action. It tells the compiler/interpreter to perform specific mathematical, relational or logical operation and produce final result. PowerShell interprets in a specific way and categorizes accordingly like arithmetic operators perform operations primari...

From the documentation: The UINavigationController class implements a specialized view controller that manages the navigation of hierarchical content. This navigation interface makes it possible to present your data efficiently and makes it easier for the user to navigate that content. You gene...

Column typeDescription:primary_keyPrimary key:stringShorter string datatype. Allows limit option for maximum number of characters.:textLonger amount of text. Allows limit option for maximum number of bytes.:integerInteger. Allows limit option for maximum number of bytes.:bigintLarger integer:float...

This topic covers matching string patterns, as well as extracting or replacing them. For details on defining complicated patterns see Regular Expressions. grep("query", "subject", optional_args) grepl("query", "subject", optional_args) gsub(&...

Every data type in erlang is called Term. It is a generic name that means any data type.

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