• Domain (14/14) Feb 23 2018 I want to convert a string like " a,b
  1, 2
  3
  " to a
• Domain (7/21) Feb 24 2018 And why this not compile:
• Domain (4/12) Feb 24 2018 OK, this compile:
• Seb (18/34) Feb 24 2018 FYI: Idiomatic D would be to avoid allocations (faster!).

Domain <dont_email empty.com> writes:

I want to convert a string like " a,b<br/>1, 2<br/>3<br/> " to a 
2D array like:
[["a", "b"],
  ["1", "2"],
  ["3", "" ]]


auto html = " a,b<br/>1, 2<br/>3<br/> ";
auto rows = html.strip.chomp("<br/>").split("<br/>");
string[][] data;
rows.each!(a => data ~= a.split(","));
string[][] result = data.map!(a => a.padRight("", 
data[0].length).map!(b => b.strip)).array;

but the result is not a string[][]:

Error: cannot implicitly convert expression `array(map(data))` of 
type `MapResult!(__lambda2, Result)[]` to `string[][]`

Domain <dont_email empty.com> writes:

On Saturday, 24 February 2018 at 07:51:27 UTC, Domain wrote:
 I want to convert a string like " a,b<br/>1, 2<br/>3<br/> " to 
 a 2D array like:
 [["a", "b"],
  ["1", "2"],
  ["3", "" ]]


 auto html = " a,b<br/>1, 2<br/>3<br/> ";
 auto rows = html.strip.chomp("<br/>").split("<br/>");
 string[][] data;
 rows.each!(a => data ~= a.split(","));
 string[][] result = data.map!(a => a.padRight("", 
 data[0].length).map!(b => b.strip)).array;

 but the result is not a string[][]:

 Error: cannot implicitly convert expression `array(map(data))` 
 of type `MapResult!(__lambda2, Result)[]` to `string[][]`

And why this not compile:

rows.each!(a => data ~= a.split(",").map!(b => 
b.strip).padRight("", 2));


Error: cannot deduce function from argument types !()(string[]), 
candidates are:
C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\iteration.d(899):
C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\iteration.d(934):

Domain <dont_email empty.com> writes:

On Saturday, 24 February 2018 at 08:59:46 UTC, Domain wrote:
 On Saturday, 24 February 2018 at 07:51:27 UTC, Domain wrote:
 [...]

 And why this not compile:

 rows.each!(a => data ~= a.split(",").map!(b => 
 b.strip).padRight("", 2));


 Error: cannot deduce function from argument types 
 !()(string[]), candidates are:
 C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\iteration.d(899):
C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\iteration.d(934):

OK, this compile:
rows.each!(a => data ~= a.split(",").map!(b => 
b.strip).padRight("", 2).array);

Seb <seb wilzba.ch> writes:

On Saturday, 24 February 2018 at 09:06:09 UTC, Domain wrote:
 On Saturday, 24 February 2018 at 08:59:46 UTC, Domain wrote:
 On Saturday, 24 February 2018 at 07:51:27 UTC, Domain wrote:
 [...]

 And why this not compile:

 rows.each!(a => data ~= a.split(",").map!(b => 
 b.strip).padRight("", 2));


 Error: cannot deduce function from argument types 
 !()(string[]), candidates are:
 C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\iteration.d(899):
C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\iteration.d(934):

 OK, this compile:
 rows.each!(a => data ~= a.split(",").map!(b => 
 b.strip).padRight("", 2).array);

FYI: Idiomatic D would be to avoid allocations (faster!).
An example:

```
auto html = " a,b<br/>1, 2<br/>3<br/> ";
auto rows = 
html.strip.splitter("<br/>").filter!(not!empty).map!(a => 
a.splitter(","));
rows.writeln;
```

https://run.dlang.io/is/LC7Sog

If you really, really need a 2d array you can always do so if 
required at the end:

```
auto arr2d = rows.map!array.array;
```

But please keep in mind that you ideally avoid the allocations in 
the first place.