cppxaml::utils Namespace Reference

Various utilities. More...

Functions
auto	tolower (std::wstring_view sv)
template<template< typename... > typename TOutContainer = std::vector, typename TInContainer , typename UnaryOp >
auto	transform (TInContainer const &iterable, UnaryOp &&unary_op)
	Maps each element in a container via a unary operation on each element.
template<template< typename... > typename TOutContainer = std::vector, typename TInContainer , typename UnaryOp >
auto	transform_with_index (TInContainer const &iterable, UnaryOp &&unary_op)
	Maps each element in a container via a unary operation on each element.

Detailed Description

Various utilities.

Function Documentation

tolower()

auto cppxaml::utils::tolower ( std::wstring_view  sv )

inline

Parameters

sv

Returns

transform()

template<template< typename... > typename TOutContainer = std::vector, typename TInContainer , typename UnaryOp >

auto cppxaml::utils::transform	(	TInContainer const &	iterable,
		UnaryOp &&	unary_op
	)

Maps each element in a container via a unary operation on each element.

Template Parameters

TOutContainer	The output container type. Defaults to std::vector.
TInContainer	The type of the container
UnaryOp	Lambda type

Parameters

iterable	The container
unary_op	The lambda for the unary operation; takes the element type of the input container.

Returns

A container comprised of the mapped elements

Example:

transform_with_index()

template<template< typename... > typename TOutContainer = std::vector, typename TInContainer , typename UnaryOp >

auto cppxaml::utils::transform_with_index	(	TInContainer const &	iterable,
		UnaryOp &&	unary_op
	)

Maps each element in a container via a unary operation on each element.

Template Parameters

TOutContainer	The output container type. Defaults to std::vector.
TInContainer	The type of the container
UnaryOp	Lambda type

Parameters

iterable	The container
unary_op	The lambda for the unary operation; takes the element type of the input container, and the index within the container.

Returns

A container comprised of the mapped elements

Example:
Here we can define a Grid with Buttons, each of whose content is sourced from a string vector:

auto strs = std::vector<std::wstring>{ L"first", L"second", L"third", L"fourth" };
auto grid = cppxaml::Grid({"40, *"}, {"Auto, Auto"},
     cppxaml::utils::transform_with_index(strs, [](const std::wstring& t, auto index) {
                return cppxaml::details::UIElementInGrid{
                    (int)index / 2,
                    (int)index % 2,
                    cppxaml::Button(winrt::hstring(t))
                };
            })
          );

Example:

auto strs = std::vector<std::wstring>{ L"first", L"second", L"third", L"fourth" };
auto grid = cppxaml::Grid({"40, *"}, {"Auto, Auto"},
     cppxaml::utils::transform_with_index(strs, [](const std::wstring& t, auto index) {
                return cppxaml::Button(winrt::hstring(t))
                         .Set(Grid::RowProperty(), (int)index / 2)
                         .Set(Grid::ColumnProperty(), (int)index % 2);
                };
            })
          );