DART BASICS

Learn all basic about dart programming language

• Dart is an object-oriented programming(OOP) language, that has a class-based style.
• Flutter is build with dart and everything we code is Flutter is also dart.

Learn Dart Programming language

Commenting Code

• Single line comments

//example of single line comments

• Multi-line comments

/*

example of

multiline comments

*/

Running The main() entry point

• Every app must have a top level main() function, which is entry point of the app.

Syntax And Example:

Declaring Variables in Dart

• Here are the ways to declare variables in dart

Public vs Private Variable

• All variables are by default public.
• Starting variable with _(underscore), the variable becomes private which means it cannot be accessed from outside class/function.

Syntax:

Numbers in dart

• There are two numeric types: int, representing integer values, and double, representing fractional values.

Strings

Boolean

• The Boolean data type is used to declare a variable whose value will be set as true (1) or false (0). To declare such a value, you use the bool keyword.

Lists

• It is comparable to arrays

Maps

• Maps are invaluable in associating a List of values by a key and a value.
• Here, key must be unique

Runes (Emojis)

• Runes are the UTF-32 code points of string like Emojis.

Using Operators

• Arithmetic Operators

• Equality and relational operators

• Type test operators

• Assignment Operator