bdlb_optionalprinter

Detailed Description

Provide a suite of helper classes for printing bsl::optional.

Outline

• Purpose
• Classes
• Description
  • Usage
    • Example 1: Printing bsl::optional to a Stream

Purpose

Provide a suite of helper classes for printing bsl::optional.

Classes

• bdlb::OptionalPrinter: utility for printing bsl::optional
• bdlb::OptionalPrinterUtil: factory for constructing bdlb::OptionalPrinter

Description

This component provides utility classes bdlb::OptionalPrinter and bdlb::OptionalPrinterUtil for printing bsl::optional.

The class bdlb::OptionalPrinter can also be used with bsl::format (it defines the bslfmt::EnableStreamedFormatter trait). For information about the supported format options see the `bslfmt` package documentation .

Usage

This section illustrates intended use of this component.

Example 1: Printing bsl::optional to a Stream

In this example, we demonstrate how to use bdlb::OptionalPrinterUtil to print bsl::optional to a stream:

bsl::optional<int> value(42);
bsl::cout << bdlb::OptionalPrinterUtil::makePrinter(value);