tmp/tmpdop6qqh5/{from.md → to.md}
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| 1 |
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#### Dependent splice specifiers <a id="temp.dep.splice">[[temp.dep.splice]]</a>
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A *splice-specifier* is dependent if its converted *constant-expression*
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is value-dependent. A *splice-specialization-specifier* is dependent if
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its *splice-specifier* is dependent or if any of its template arguments
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are dependent. A *splice-scope-specifier* is dependent if its
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*splice-specifier* or *splice-specialization-specifier* is dependent.
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[*Example 1*:
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``` cpp
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template<auto T, auto NS>
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void fn() {
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using a = [:T:]<1>; // [:T:]<1> is dependent because [:T:] is dependent
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static_assert([:NS:]::template TCls<1>::v == a::v); // [:NS:] is dependent
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}
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namespace N {
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template <auto V> struct TCls { static constexpr int v = V; };
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}
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int main() {
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fn<^^N::TCls, ^^N>();
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}
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```
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— *end example*]
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[*Example 2*:
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``` cpp
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template<template<class> class X>
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struct S {
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[:^^X:]<int, float> m;
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};
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template<class> struct V1 {};
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template<class, class = int> struct V2 {};
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S<V1> s1; // error: V1<int, float> has too many template arguments
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S<V2> s2; // OK
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```
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— *end example*]
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