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refactor

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This commit is contained in:
Justin Lin
2022-03-11 15:08:49 +08:00
parent 5f400c124d
commit fbca4bd868
2 changed files with 6 additions and 8 deletions
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5
src/util/_impl/_sub_str_impl.scad
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@@ -1,5 +0,0 @@
function _sub_str(t, begin, end) =
begin == end ? "" : str(t[begin], _sub_str_impl(t, begin + 1, end));
function _sub_str_impl(t, begin, end) =
is_undef(end) ? _sub_str(t, begin, len(t)) : _sub_str(t, begin, end);

9
src/util/sub_str.scad
View File

@@ -8,6 +8,9 @@
* *
**/ **/
use <_impl/_sub_str_impl.scad>; function sub_str(t, begin, end) =
let(
function sub_str(t, begin, end) = _sub_str_impl(t, begin, end); ed = is_undef(end) ? len(t) : end,
cum = [for(i = begin, s = t[i]; i < ed; i = i + 1, s = str(s, t[i])) s]
)
cum[len(cum) - 1];