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Update hexify to use array lookup instead of ternary (#270)

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This commit is contained in:
dtoma 2016-06-29 19:28:56 +08:00
parent 7ffa07e3a3
commit 5c129c8981
1 changed files with 5 additions and 3 deletions
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8
src/json.hpp.re2c
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@ -5959,9 +5959,11 @@ class basic_json
// (0..f)
const auto hexify = [](const int v) -> char
{
return (v < 10)
? ('0' + static_cast<char>(v))
: ('a' + static_cast<char>((v - 10) & 0x1f));
static const char hex[16] = { '0', '1', '2', '3',
'4', '5', '6', '7',
'8', '9', 'a', 'b',
'c', 'd', 'e', 'f' };
return hex[v];
};
// print character c as \uxxxx