-
-
-
-
diff --git a/public/docs/_examples/pipes/ts/app/app.component.ts b/public/docs/_examples/pipes/ts/app/app.component.ts
index 015715cc7e..e340783ab4 100644
--- a/public/docs/_examples/pipes/ts/app/app.component.ts
+++ b/public/docs/_examples/pipes/ts/app/app.component.ts
@@ -10,7 +10,6 @@ import {HeroBirthday2} from './hero-birthday2.component';
import {HeroListComponent} from './hero-list.component';
import {PowerBooster} from './power-booster.component';
import {PowerBoostCalculator} from './power-boost-calculator.component';
-import {RandomPipeComponent} from './random-pipe.component';
@Component({
selector: 'my-app',
@@ -21,8 +20,7 @@ import {RandomPipeComponent} from './random-pipe.component';
HeroBirthday,
HeroBirthday2,
HeroListComponent,
- PowerBooster, PowerBoostCalculator,
- RandomPipeComponent
+ PowerBooster, PowerBoostCalculator
],
providers:[HTTP_PROVIDERS]
})
diff --git a/public/docs/_examples/pipes/ts/app/exponential-strength.pipe.ts b/public/docs/_examples/pipes/ts/app/exponential-strength.pipe.ts
index 7164086f21..5db34b3107 100644
--- a/public/docs/_examples/pipes/ts/app/exponential-strength.pipe.ts
+++ b/public/docs/_examples/pipes/ts/app/exponential-strength.pipe.ts
@@ -11,7 +11,7 @@ import {Pipe, PipeTransform} from 'angular2/core';
*/
@Pipe({name: 'exponentialStrength'})
export class ExponentialStrengthPipe implements PipeTransform {
- transform(value:number, [exponent]) : number {
+ transform(value:number, [exponent]:string[]) : number {
var exp = parseFloat(exponent);
return Math.pow(value, isNaN(exp) ? 1 : exp);
}
diff --git a/public/docs/_examples/pipes/ts/app/random-pipe.component.ts b/public/docs/_examples/pipes/ts/app/random-pipe.component.ts
deleted file mode 100644
index fe86108432..0000000000
--- a/public/docs/_examples/pipes/ts/app/random-pipe.component.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-import {Component} from 'angular2/core';
-import {Pipe, PipeTransform} from 'angular2/core';
-
-// #docregion pipe
-// Pure pipe
-@Pipe({ name: 'randomizer' })
-export class RandomizerPipe implements PipeTransform {
- // Impure function
- transform() { return Math.random() * 10 ;}
-}
-// #enddocregion pipe
-
-@Component({
- selector: 'random-pipe',
- template: `
-
Random Pipe (pure pipe/impure function)
-
-
Input value: {{box.value}}
-
Random pipe output: {{box.value | randomizer}}
- `,
- pipes: [RandomizerPipe]
-})
-export class RandomPipeComponent {
-}
diff --git a/public/docs/_examples/router/ts/app/main.2.ts b/public/docs/_examples/router/ts/app/main.2.ts
index 244050a36a..d96ba9c00e 100644
--- a/public/docs/_examples/router/ts/app/main.2.ts
+++ b/public/docs/_examples/router/ts/app/main.2.ts
@@ -11,7 +11,7 @@ import {AppComponent} from './app.component';
// Add these symbols to override the `LocationStrategy`
import {provide} from 'angular2/core';
import {LocationStrategy,
- HashLocationStrategy} from 'angular2/router';
+ HashLocationStrategy} from 'angular2/platform/common';
// #enddocregion
/* Can't use AppComponent ... but display as if we can
// #docregion
diff --git a/public/docs/ts/latest/guide/dependency-injection.jade b/public/docs/ts/latest/guide/dependency-injection.jade
index c2cfd5861e..96f003456a 100644
--- a/public/docs/ts/latest/guide/dependency-injection.jade
+++ b/public/docs/ts/latest/guide/dependency-injection.jade
@@ -871,7 +871,8 @@ p.
They are retrieved by calling `injector.get`.
The `get` method throws an error if it can't resolve the requested service.
- We can call `getOptional` instead, which we do in one case
+ We can call `get` with a second parameter (the value to return if the service is not found)
+ instead, which we do in one case
to retrieve a service (`ROUS`) that isn't registered with this or any ancestor injector.
.l-sub-section
diff --git a/public/docs/ts/latest/guide/pipes.jade b/public/docs/ts/latest/guide/pipes.jade
index 4853df78d4..98b23f157d 100644
--- a/public/docs/ts/latest/guide/pipes.jade
+++ b/public/docs/ts/latest/guide/pipes.jade
@@ -386,33 +386,21 @@ figure.image-display
a(id="pure-pipe-pure-fn")
:marked
- ### Pure pipes vs. pure functions
+ ### Pure pipes and pure functions
- When developers first hear of *pure pipes* many of them think these pipes must be *pure functions*.
+ A pure pipe uses pure functions.
Pure functions process inputs and return values without detectable side-effects.
Given the same input they should always return the same output.
- Pure pipes _are_ typically implemented with pure function.
The pipes we saw earlier in this chapter were implemented with pure functions.
The built-in `DatePipe` is a pure pipe with a pure function implementation.
So is our `ExponentialStrengthPipe`.
So is our `FlyingHeroesPipe`.
- But there is no necessary connection between a pure pipe and a pure function.
A few steps back we reviewed the `FlyingHeroesImpurePipe` — *an impure pipe with a pure function*.
-
- We can also write *a pure pipe with an impure function* such as the
- `RandomizerPipe` (also in the [live example](/resources/live-examples/pipes/ts/plnkr.html))
- that ignores its input value and outputs a random number. Clearly an impure function!
- Yet it's perfectly well behaved as a pure pipe.
-+makeExample('pipes/ts/app/random-pipe.component.ts', 'pipe','app/random-pipe.component.ts (pipe)')(format='.')
-:marked
- When the input changes, it outputs a new value albeit never the same value for the same input.
-
- Remember *purity in a pipe has nothing to do with pure functions!*
-
- *Pipe purity* is more about the purity of the input values than of the pipe itself.
+
+ But a *pure pipe* must always be implemented with a *pure function*. Failure to heed this warning will bring about many a console errors regarding expressions that have changed after they were checked.
.l-main-section
:marked
@@ -471,4 +459,3 @@ code-example(format="." language="html")
If these performance and minification considerations do not apply to you, you can always create your own such pipes
(along the lines of the [FlyingHeroesPipe](#impure-flying-heroes)) or find them in the community.
-