• Enjoys Math (22/22) Nov 15 2017 I had it working in an earlier program.
• Basile B. (17/39) Nov 15 2017 Hi, your cast is invalid because each element of "array" is

Enjoys Math <enjoysmath gmail.com> writes:

I had it working in an earlier program.

Now I have:


main.d
------

import std.json;
import std.file;

int main() {
    JSONValue settings;

    settings = parseJSON("settings.txt");
    auto intList = cast(int[]) settings["int list"].array;

    writeln(intList);

    readln();
}


for input:

settings.txt
------------
{
    "int list" : [1,2,3,4,5]
}


printing:

[1,0,2,0,2,0,2,0,3,0,2, ...] (length = 20)


Should I access each member int the array individually?

Basile B. <b2.temp gmx.com> writes:

On Wednesday, 15 November 2017 at 19:54:20 UTC, Enjoys Math wrote:
 I had it working in an earlier program.

 Now I have:


 main.d
 ------

 import std.json;
 import std.file;

 int main() {
    JSONValue settings;

    settings = parseJSON("settings.txt");
    auto intList = cast(int[]) settings["int list"].array;

    writeln(intList);

    readln();
 }


 for input:

 settings.txt
 ------------
 {
    "int list" : [1,2,3,4,5]
 }


 printing:

 [1,0,2,0,2,0,2,0,3,0,2, ...] (length = 20)


 Should I access each member int the array individually?

Hi, your cast is invalid because each element of "array" is 
itself a JSONValue.
You're even lucky to have something that resembles to the input ;)

Try rather:

---
import std.json, std.stdio, std.algorithm, std.array;

void main() {
    JSONValue settings;
    settings = parseJSON(`{"int list" : [1,2,3,4,5]}`);
    // take the int value of each individal element to make the 
array.
    auto intList = settings["int list"].array.map!(a => 
a.integer).array;
    writeln(intList);
}
---