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Mateusz Janek stryku

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stryku / ctai_string_2.cpp
Last active February 23, 2017 21:39
template <typename string1, typename string2>
struct sum_chars_count
{
static constexpr auto sum = to_string<string1>::size + to_string<string2>::size;
};
@stryku
stryku / ctai_string_front_0.cpp
Created February 26, 2017 14:56
namespace details
{
template <typename>
struct string_front_impl;
template <char front, char ...chars>
struct string_front_impl<string<front, chars...>>
{
static constexpr auto value = front;
};
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stryku / ctai_srting_to_int_0.cpp
Created February 26, 2017 15:04
template <typename, int sign = 1, int current_val = 0>
struct string_to_int_impl;
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stryku / ctai_srting_to_int_1.cpp
Created February 26, 2017 15:06
template <int sign, int current_val>
struct string_to_int_impl<string<>, sign, current_val>
{
static constexpr auto value = sign * current_val;
};
@stryku
stryku / ctai_srting_to_int_2.cpp
Created February 26, 2017 15:09
template <int sign, int current_val, char current_char, char ...chars>
struct string_to_int_impl<string<current_char, chars...>, sign, current_val>
{
static constexpr auto nex_val = current_val * 10 + (current_char - '0');
static constexpr auto value = string_to_int_impl<string<chars...>, sign, nex_val>::value;
};
@stryku
stryku / ctai_srting_to_int_3.cpp
Last active April 9, 2017 22:44
template <int sign, int current_val, char current_char, char ...chars>
struct string_to_int_impl<string<'-', current_char, chars...>, sign, current_val>
{
static constexpr auto nex_val = current_val * 10 + (current_char - '0');
static constexpr auto value = string_to_int_impl<string<chars...>, -1, nex_val>::value;
};
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stryku / ctai_srting_to_int_4.cpp
Created February 26, 2017 16:38
string_to_int_impl< string< '-', '2', '6', '3' >, 1, 0> // this will hit 3rd specialization
string_to_int_impl< string< '6', '3' >, -1, 2> // this will hit the 2nd
string_to_int_impl< string< '3' >, -1, 26> // this will hit the 2nd
string_to_int_impl< string<>, -1, 263> // this will hit first one
@stryku
stryku / ctai_string_from_int_0.cpp
Created February 26, 2017 16:46
template <int value, bool end, typename sign_str, typename current_string = string<>>
struct string_from_int_impl;
@stryku
stryku / ctai_string_from_int_1.cpp
Last active March 26, 2017 18:40
template <typename sign_str, typename current_string>
struct string_from_int_impl<0, sign_str, true, current_string>
{
using type = string_merge<sign_str, current_string>;
};
@stryku
stryku / ctai_string_from_int_2.cpp
Last active March 26, 2017 18:41
template <int value, typename sign_str, char ...chars>
struct string_from_int_impl<value, sign_str, false, string<chars...>>
{
using type = typename string_from_int_impl<
value/10,
sign_str,
value/10 == 0,
string<value % 10 + '0', chars...>>::type;
};