std::experimental::ranges:: DefaultConstructible

From cppreference.com

Defined in header `<experimental/ranges/concepts>`
template < class T > concept bool DefaultConstructible = Constructible < T > ;		(ranges TS)

The DefaultConstructible concept provides a shorthand for the common case when the question is whether a type can be constructed with no arguments.

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Metaprogramming library (C++11)
Diagnostics library
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Containers library
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Ranges library (C++20)
Algorithms library
Numerics library
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Execution support library (C++26)
Technical specifications
Symbols index
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Technical Specification
Filesystem library (filesystem TS)
Library fundamentals (library fundamentals TS)
Library fundamentals 2 (library fundamentals TS v2)
Library fundamentals 3 (library fundamentals TS v3)
Extensions for parallelism (parallelism TS)
Extensions for parallelism 2 (parallelism TS v2)
Extensions for concurrency (concurrency TS)
Extensions for concurrency 2 (concurrency TS v2)
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Ranges (ranges TS)
Reflection (reflection TS)
Mathematical special functions (special functions TR)
Experimental Non-TS
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std::execution
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2D Graphics

Constructible	specifies that a variable of the type can be constructed from or bound to a set of argument types (concept)
is_default_constructible is_trivially_default_constructible is_nothrow_default_constructible (C++11) (C++11) (C++11)	checks if a type has a default constructor (class template)