[小ネタ]mat-dividerをngForしたとき最後の要素だけ非表示にする方法

<mat-list-item *ngFor="let item of items; last as last">
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.
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<mat-divider *ngIf="!last"></mat-divider>
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Angular CLI: 8.3.22
Node: 12.13.0
OS: darwin x64
Angular: 8.2.14
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.803.22
@angular-devkit/build-angular     0.803.22
@angular-devkit/build-optimizer   0.803.22
@angular-devkit/build-webpack     0.803.22
@angular-devkit/core              8.3.22
@angular-devkit/schematics        8.3.22
@angular/cdk                      8.2.3
@angular/cli                      8.3.22
@angular/material                 8.2.3
@ngtools/webpack                  8.3.22
@schematics/angular               8.3.22
@schematics/update                0.803.22
rxjs                              6.4.0
typescript                        3.5.3
webpack                           4.39.2

❯ ng new divider --style=scss --routing
❯ cd divider/
❯ ng add @angular/material
Installing packages for tooling via npm.
Installed packages for tooling via npm.
? Choose a prebuilt theme name, or "custom" for a custom theme: Indigo/Pink        [ Preview: https://material.angular.io?theme=indigo-pink ]
? Set up HammerJS for gesture recognition? Yes
? Set up browser animations for Angular Material? Yes

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

import { MatDividerModule } from '@angular/material/divider';
import { MatListModule } from '@angular/material/list';
import { MatIconModule } from '@angular/material/icon';

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    AppRoutingModule,
    BrowserAnimationsModule,
    MatDividerModule,
    MatListModule,
    MatIconModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule {}

import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {
  items = [{ name: 'item1' }, { name: 'item2' }, { name: 'item3' }];
}

<mat-list>
  <h3 mat-subheader>最後のmat-divider表示</h3>
  <mat-list-item *ngFor="let item of items">
    <h4 mat-line>{{ item.name }}</h4>
    <mat-divider></mat-divider>
  </mat-list-item>

  <h3 mat-subheader>最後のmat-divider非表示</h3>
  <mat-list-item *ngFor="let item of items; last as last">
    <h4 mat-line>{{ item.name }}</h4>
    <mat-divider *ngIf="!last"></mat-divider>
  </mat-list-item>
</mat-list>

$ ng serve