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path: root/src/function/apply.h
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2015-03-07Changed `tav::Apply` implementation selection to template aliasAdrian Kummerlaender
* there is no reason to differ from the rest of the library and use inheritance in this instance * added link to blog article on the _Scheme metaphor_ to `README.md`
2015-02-19Introduced `Branch` and `Else` pair aliases for usage in `Cond`Adrian Kummerlaender
* pure _syntax sugar_ to improve readability of `Cond` conditionals
2015-02-15Moved class-based implementations into `detail` namespaceAdrian Kummerlaender
* while class templates enable e.g. hiding implementation details they also require evaluation via `Eval` ** this clutters up the actual logic and is now hidden behind aliae that perform the evaluation
2015-02-14Introduced `Eval` function evaluation helperAdrian Kummerlaender
* replaces `typename *::type` constructs with `Eval` applications * aims to further unify function evaluation
2015-02-12Implemented `Cond` conditionalAdrian Kummerlaender
* returns the `CDR` of the first true `CAR` in a given list of pairs * reimplemented `Apply` base class selection in terms of `Cond`
2015-02-12Revamped partial function applicationAdrian Kummerlaender
* moved internals into separate header i.e. the `detail` namespace relating to `Apply` * implemented automatic alias selection by implementing aliae of the basic variadic `type` template alias in different base classes ** variadic partial application is implemented in `detail::apply_variadic` *** `detail::apply_single` and `detail::apply_pair` define aliae to `detail::apply_variadic`'s `type` template alias *** both restricted aliae derive from `detail::apply_variadic` ** `Apply` derives from any of the aliae defining base classes depending on the count of placeholders as determined by `detail::count_placeholders` *** `Apply` is guaranteed to always be derived from `detail::apply_variadic` one way or the other * changed functions, test cases and examples depending on `Apply` accordingly ** `Length` had to be reimplemented without `Apply` as it doesn't allow usage of aliae expecting a different count of arguments anymore *** this is a advantage in the sense that core functionality of _TypeAsValue_ now doesn't depend on this complex partial application implementation anymore *** such functionality may be reimplemented separately from `Apply` * removed unnecessary `tav` namespace prefixes
2015-01-26Redefined `Length` in terms of `Apply` and `Fold`Adrian Kummerlaender
* this function illustrates the use case `Apply` is currently intended for * moved `Take` and `Nth` into separate files to resolve header resolution conflicts
2015-01-26Added pair and triple aliae for the variadic `Apply` typeAdrian Kummerlaender
2015-01-25Implemented partial function application prototypeAdrian Kummerlaender
* function `Apply` enables partial supply of the template parameters of a given _function_ ** unsupplied parameters may be marked by _placeholders_, i.e. approach is similar to `std::bind` ** returns a template type taking the remaining, unsupplied parameters of the partially applied _function_ * this is a prototype in the sense, that neither full application using `Apply` or partial application of higher order functions is currently supported ** e.g. a `single_type` alias type declaration is required as the variadic template `template<typename...>` doesn't directly map to `template<typename>` * appropriate test cases document current feature set * the goal is to enable a concise defintion of _lambda-like_ expressions for easy specialization of e.g. functors provided to higher order functions