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Dart's first class functions offer concise coding patterns. Here, we the print function is called for each element of a. This is the equivalent of the following:

You can define getters for a class that return a value. By default class fields define create implicit getters and setters, but you can use the get and set keywords to define explicit custom getters and setters.

Dart's first class functions offer concise coding patterns. Here, the print function is called for each element of a. This is the equivalent of the following:

You can define getters for a class that return a value. By default defined class fields create implicit getters and setters, but you can use the get and set keywords to define explicit custom getters and setters.

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a.forEach(print);

Dart's first class functions offer concise coding patterns. Here, we the print function is called for each element of a. This is the equivalent of the following:

a.forEach((e) => print(e));

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a({b: 42}) => b;

Functions can have named parameters by using curly braces. Named parameters are optionally passed in by name by the caller, and can have a default value.

print(a());      // 42
print(a(b: 11)); // 11

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int get x => 9;

You can define getters for a class that return a value. By default class fields define create implicit getters and setters, but you can use the get and set keywords to define explicit custom getters and setters.

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'''a$b

 c
''';

Multi-line Strings are created in Dart using triple quotes. String interpolation still works.

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typedef C(a);   

You can use the typedef keyword to assign a name to a function type. Here, C defines a function that takes a single argument. Now we can refer to C where we a need a function with that signature:

k(C c) => c;

And calling k:

k((a) => 4);

This is all very similar to the previous snippet, but can simplify things greatly if we need to continuously refer to a function type.

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a(b()) => b;

Dart functions are first class. Here a is a function that takes another function as an argument and returns it. You could call a like this:

a(() => 4);

Note that the result of this is not 4, but rather a function with the signature () => dynamic.

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