Wraps c so missing‐key lookups return v instead of throwing.

Synopsis

Declared in <folly/Format.h>

template<
    class Container,
    class Value>
/* implementation-defined */
defaulted(
    Container const& c,
    Value const& v);

Return Value

A wrapper that yields v on out‐of‐range lookups.

Parameters

Name

Description

c

The container to wrap.

v

The default value to return for missing keys.

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