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Fix the constructor explanation in the guide (#372)

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This commit is contained in:
konstin 2018-07-03 16:24:43 +02:00 committed by Alex Crichton
parent 9339a55f3e
commit 66096804ce
3 changed files with 14 additions and 12 deletions
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12
examples/smorgasboard/app.js
View File

@ -8,16 +8,16 @@ function assertEq(a, b) {
assertEq(concat('a', 'b'), 'ab');
// Note the `new Foo()` syntax cannot be used, static function
// constructors must be used instead. Additionally objects allocated
// corresponding to Rust structs will need to be deallocated on the
// Rust side of things with an explicit call to `free`.
let foo = Foo.new();
// Note that to use `new Foo()` the constructor function must be annotated
// with `#[wasm_bindgen(constructor)]`, otherwise only `Foo.new()` can be used.
// Additionally objects allocated corresponding to Rust structs will need to
// be deallocated on the Rust side of things with an explicit call to `free`.
let foo = new Foo();
assertEq(foo.add(10), 10);
foo.free();
// Pass objects to one another
let foo1 = Foo.new();
let foo1 = new Foo();
let bar = Bar.from_str("22", { opaque: 'object' });
foo1.add_other(bar);

1
examples/smorgasboard/src/lib.rs
View File

@ -21,6 +21,7 @@ pub struct Foo {
#[wasm_bindgen]
impl Foo {
#[wasm_bindgen(constructor)]
pub fn new() -> Foo {
Foo { contents: 0 }
}

13
guide/src/what-else-can-we-do.md
View File

@ -27,6 +27,7 @@ pub struct Foo {
#[wasm_bindgen]
impl Foo {
#[wasm_bindgen(constructor)]
pub fn new() -> Foo {
Foo { contents: 0 }
}
@ -110,16 +111,16 @@ function assertEq(a, b) {
function main() {
assertEq(concat('a', 'b'), 'ab');
// Note the `new Foo()` syntax cannot be used, static function
// constructors must be used instead. Additionally objects allocated
// corresponding to Rust structs will need to be deallocated on the
// Rust side of things with an explicit call to `free`.
let foo = Foo.new();
// Note that to use `new Foo()` the constructor function must be annotated
// with `#[wasm_bindgen(constructor)]`, otherwise only `Foo.new()` can be used.
// Additionally objects allocated corresponding to Rust structs will need to
// be deallocated on the Rust side of things with an explicit call to `free`.
let foo = new Foo();
assertEq(foo.add(10), 10);
foo.free();
// Pass objects to one another
let foo1 = Foo.new();
let foo1 = new Foo();
let bar = Bar.from_str("22", { opaque: 'object' });
foo1.add_other(bar);