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add more details on interpolated strings, clean up the naming for oop section

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This commit is contained in:
Justin Donaldson 2013-08-23 16:24:35 -07:00
parent f11d5cf90c
commit 0f82b18349
1 changed files with 23 additions and 17 deletions
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40
haxe.html.markdown
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@ -151,8 +151,14 @@ class LearnHaxe3{
var a_string = "some" + 'string'; // strings can have double or single quotes
trace(a_string + " is the value for a_string");
/*
Strings can be "interpolated" by inserting variables into specific
positions. The string must be single quoted, and the variable must
be preceded with "$". Expressions can be enclosed in ${...}.
*/
var x = 1;
var an_interpolated_string = 'the value of x is $x';
var another_interpolated_string = 'the value of x + 1 is ${x + 1}';
/*
Strings are immutable, instance methods will return a copy of
@ -470,27 +476,27 @@ class LearnHaxe3{
Create an instance of FooClass. The classes for this are at the
end of the file.
*/
var instance = new FooClass(3);
var foo_instance = new FooClass(3);
// read the public variable normally
trace(instance.public_any + " is the value for instance.public_any");
trace(foo_instance.public_any + " is the value for foo_instance.public_any");
// we can read this variable
trace(instance.public_read + " is the value for instance.public_read");
trace(foo_instance.public_read + " is the value for foo_instance.public_read");
// but not write it
// instance.public_write = 4; // this will throw an error if uncommented:
// trace(instance.public_write); // as will this.
// foo_instance.public_write = 4; // this will throw an error if uncommented:
// trace(foo_instance.public_write); // as will this.
trace(instance + " is the value for instance"); // calls the toString method
trace(instance.toString() + " is the value for instance.toString()"); // same thing
trace(foo_instance + " is the value for foo_instance"); // calls the toString method
trace(foo_instance.toString() + " is the value for foo_instance.toString()"); // same thing
/*
Instance has the "FooClass" type, while acceptBaseFoo has the
BaseFooClass type. However, since FooClass extends BaseFooClass,
it is accepted.
The foo_instance has the "FooClass" type, while acceptBarInstance
has the BarClass type. However, since FooClass extends BarClass, it
is accepted.
*/
BaseFooClass.acceptBaseFoo(instance);
BarClass.acceptBarInstance(foo_instance);
/*
The classes below have some more advanced examples, the "example()"
@ -508,7 +514,7 @@ class LearnHaxe3{
/*
This is the "child class" of the main LearnHaxe3 Class
*/
class FooClass extends BaseFooClass implements BaseFooInterface{
class FooClass extends BarClass implements BarInterface{
public var public_any:Int; // public variables are accessible anywhere
public var public_read (default,null): Int; // use this style to only enable public read
public var public_write (null, default): Int; // or public write
@ -520,7 +526,7 @@ class FooClass extends BaseFooClass implements BaseFooInterface{
// a public constructor
public function new(arg:Int){
super(); // call the constructor of the parent object, since we extended BaseFooClass
super(); // call the constructor of the parent object, since we extended BarClass
this.public_any= 0;
this._private = arg;
@ -544,7 +550,7 @@ class FooClass extends BaseFooClass implements BaseFooInterface{
}
// this class needs to have this function defined, since it implements
// the BaseFooInterface interface.
// the BarInterface interface.
public function baseFunction(x: Int) : String{
// convert the int to string automatically
return x + " was passed into baseFunction!";
@ -554,19 +560,19 @@ class FooClass extends BaseFooClass implements BaseFooInterface{
/*
A simple class to extend
*/
class BaseFooClass {
class BarClass {
var base_variable:Int;
public function new(){
base_variable = 4;
}
public static function acceptBaseFoo(b:BaseFooClass){
public static function acceptBarInstance(b:BarClass){
}
}
/*
A simple interface to implement
*/
interface BaseFooInterface{
interface BarInterface{
public function baseFunction(x:Int):String;
}