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refs #247 CVariant::valueOrDefault convenience function.

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Mathew Sutcliffe
2014-12-06 15:57:23 +00:00
parent 0bc4f82ea7
commit 1b671e9cb0
1 changed files with 5 additions and 0 deletions
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5
src/blackmisc/variant.h
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@@ -120,6 +120,11 @@ namespace BlackMisc
//! Synonym for value(). //! Synonym for value().
template <typename T> T to() const { return m_v.value<T>(); } template <typename T> T to() const { return m_v.value<T>(); }
//! Returns the value converted to the type T, or a default if it can not be converted.
//! \details Parameter is passed by value to avoid odr-using the argument in case it is
//! an inline-initialized static const integral data member without a definition (§9.4.2/3).
template <typename T> T valueOrDefault(T def) const { return canConvert<T>() ? value<T>() : def; }
//! Return the internal QVariant. //! Return the internal QVariant.
const QVariant &getQVariant() const { return m_v; } const QVariant &getQVariant() const { return m_v; }