Re: string to character code hex string

[Ali Çehreli via Digitalmars-d-learn]

On 09/02/2017 09:23 AM, bitwise wrote:
On Saturday, 2 September 2017 at 15:53:25 UTC, bitwise wrote:
[...]

This seems to work well enough.

string toAsciiHex(string str)
{
    import std.array : appender;

    auto ret = appender!string(null);
    ret.reserve(str.length * 2);
    foreach(c; str) ret.put(format!"%x"(c));
    return ret.data;
}


Lazy version, which the user can easily generate a string from by 
appending .array:

import std.stdio;

auto hexString(R)(R input) {
    import std.conv : text;
    import std.string : format;
    import std.algorithm : map, joiner;
    return input.map!(c => format("%02x", c)).joiner;
}

void main() {
    writeln("AAA".hexString);
}

To generate string:

    import std.range : array;
    writeln("AAA".hexString.array);

Ali