• Andrey (10/18) Aug 15 2018 Compiler says that it can't convert result of map function to
• Paul Backus (9/19) Aug 15 2018 The result of `map` is a lazily-evaluated range. To convert it to

Andrey <saasecondbox yandex.ru> writes:

Hello,
I have the following code:
 string[] list;
 string text;
 // ...
 enum pattern = ctRegex!`^[0-9]+$`;
 list = text.split('\n').map!(line => 
 line.matchFirst(pattern).hit);

Compiler says that it can't convert result of map function to 
string[]...

What I want:
1. Split some text into lines using separator '\n'.
2. Apply to each line a regex pattern and extract matched text.
3. Result of these operations assign to variable of type string[].

Tried to do this:
 list = text.split('\n').map!(line => 
 line.matchFirst(pattern).hit).to!(string[]);

but no success...

Paul Backus <snarwin gmail.com> writes:

On Wednesday, 15 August 2018 at 13:53:02 UTC, Andrey wrote:
 Hello,
 I have the following code:
 string[] list;
 string text;
 // ...
 enum pattern = ctRegex!`^[0-9]+$`;
 list = text.split('\n').map!(line => 
 line.matchFirst(pattern).hit);

 Compiler says that it can't convert result of map function to 
 string[]...

The result of `map` is a lazily-evaluated range. To convert it to 
an array, use `std.array.array`:

import std.array: array;
//...
list = text
     .split('\n')
     .map!(line => line.matchFirst(pattern).hit)
     .array;