Best Way to Code

 this.carriers = this.carriers.filter((el, i, a) => i === a.indexOf(el))

             <form (submit)="showReport()">
                 <div class="form-group">
                     <label>Filter </label>
                     <input type="text" name="filter" class="form-control" [(ngModel)]="filter.keyword" />
                 </div>
                 <div class="text-right">
                     <button type="submit" name="search" class="btn btn-primary">Search </button>
                 </div>
             </form>

• Format: {{currency:currencyCode:symbolDisplay:digitInfo}}
• CurrencyCode Info: https://en.wikipedia.org/wiki/ISO_4217
• SymbolDisplay: is a boolean indicating whether to use the currency symbol or code.
      true: use symbol (e.g. $).
      false(default): use code (e.g. USD).
• DigitInfo Format: {minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}
  •    1 : minIntegerDigits
  •    2 : minFractionDigits
  •    2 : maxFractionDigits

Use an extension method to convert from string to enum.

 public static T ToEnum(this string enumString)
 {
    return (T) Enum.Parse(typeof (T), enumString);
 }

//Usage:

 Color colorEnum = "Red".ToEnum<Color>();

  this.customerid = Number(text);