小编abh*_*sra的帖子

我有一个列表组件,代码如下:

///<reference path="../../node_modules/angular2/typings/browser.d.ts"/>
import { Component, OnInit } from 'angular2/core';
import { ROUTER_DIRECTIVES } from 'angular2/router';

import { Employee } from '../models/employee';
import { EmployeeListServiceComponent } from '../services/employee-list-service.component';

@Component({
  selector: 'employee-list',
  template: `
    <ul class="employees">
  <li *ngFor="#employee of employees">
    <a [routerLink]="['EmployeeDetail', {id: employee.id}]">
      <span class="badge">{{employee.id}}</span>
      {{employee.name}}
    </a>
  </li>
</ul>
  `,
  directives: [ROUTER_DIRECTIVES],
  providers: [EmployeeListServiceComponent]
})

export class EmployeeListComponent implements OnInit {
  public employees: Employee[];
  public errorMessage: string;

  constructor(
    private _listingService: EmployeeListServiceComponent
  ){}

  ngOnInit() {
    this._listingService.getEmployees().subscribe(
                     employees => this.employees = employees, …

参考BigDecimal课程文件,

n,m = a.precs
prec返回有效位数(n)和最大有效位数(m)a.

我对以下与之相关的输出感到困惑BigDecimal.

require 'bigdecimal'    
BigDecimal.new('1').precs # => [9, 18] 
BigDecimal.new(1).precs   # => [9, 27]

我无法弄清楚为什么当a String传递时,与传递a 相比,最大有效位数会减少Fixnum.

它还会导致任何精度问题吗？