range result in Tuple! and how to convert into assocArray by sort?

[forkit]

On Tuesday, 10 May 2022 at 03:22:04 UTC, MichaelBi wrote:
> s is the string, and print result as following:
>
> s.array.sort!("a<b").group.assocArray.byPair.array.sort!("a[0]<b[0]").each!writeln;
>
> Tuple!(dchar, "key", uint, "value")('A', 231)
> Tuple!(dchar, "key", uint, "value")('C', 247)
> Tuple!(dchar, "key", uint, "value")('G', 240)
> Tuple!(dchar, "key", uint, "value")('T', 209)
>
> then how to transfer into 
> [['A',231],['C',247],['G',240],['T',209]]? tried map!, but can 
> only sortout key or value... tried array(), but result is not 
> sorted then...thanks in advance.

Adding tuples to an AA is easy.

Sorting the output of an AA is the tricky part.

// -----

module test;
@safe:

import std;

void main()
{
     uint[dchar] myAA;
     Tuple!(dchar, uint) myTuple;

     myTuple[0] = 'C'; myTuple[1] = 247;
     myAA[ myTuple[0] ] = myTuple[1];

     myTuple[0] = 'G'; myTuple[1] = 240;
     myAA[ myTuple[0] ] = myTuple[1];

     myTuple[0] = 'A'; myTuple[1] = 231;
     myAA[ myTuple[0] ] = myTuple[1];

     myTuple[0] = 'T'; myTuple[1] = 209;
     myAA[ myTuple[0] ] = myTuple[1];

     // NOTE: associative arrays do not preserve the order of the 
keys inserted into the array.
     // See: https://dlang.org/spec/hash-map.html

     // if we want the output of an AA to be sorted (by key)..
     string[] orderedKeyPairSet;

     foreach(ref key, ref value; myAA.byPair)
         orderedKeyPairSet ~= key.to!string ~ ":" ~ 
value.to!string;

     orderedKeyPairSet.sort;

     foreach(ref str; orderedKeyPairSet)
         writeln(str);

     /+
     A:231
     C:247
     G:240
     T:209
    +/

}

// --------