How to create associative array of strings ( string[strings] ) from key-value file?

Question

Here example of associative array that I would like to get:

string [string] rlist = ["dima":"first", "masha":"second", "roma":"third"];

Text file that I read have very simple structure:

peter = fourth ivan = fifth david = sixth

string [string] strarr;    
string txt = readText("test.txt");
foreach (t;txt.splitLines())
{
    // ??
}

Could anybody suggest way?

Answer 1

It may be me but I find it hard to reason about with a for loop and temp variables, I would rather do something like:

import std.conv;
import std.stdio;
import std.array;
import std.algorithm;

void main() {
    string[string] dic = File("test")
                              .byLine
                              .map!(l => l.to!string.findSplit(" = "))
                              .map!(l => tuple( l[0], l[2] ))
                              .assocArray;
}

byLine: read line by line, better than reading the whole thing and then splitting.

first map: split each line into three parts as explained by rcorre

second map: build pairs from the splitted lines

assocArray: build an associative array from those pairs.