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digitalmars.D.learn - File difference module similar to the Linux command "comm"

reply Vino <akashvino79 gmail.com> writes:
Hi All,

   May i know whether there is any module similar to  the Linux 
command "comm" (finding difference between 2 files), if present 
can you please guide me through link to the page nor do let me 
know  if there is any other solution.

Eg
File1
list1
list2
list3
lsit5

File2
list1
list3
lsit6

File1 : difference: list6
File2 : difference: list2,list5

From,
Vino
Sep 11 2021
parent jfondren <julian.fondren gmail.com> writes:
On Saturday, 11 September 2021 at 23:17:31 UTC, Vino wrote:

 Hi All,

   May i know whether there is any module similar to  the Linux 
 command "comm" (finding difference between 2 files), if present 
 can you please guide me through link to the page nor do let me 
 know  if there is any other solution.

 Eg
 File1
 list1
 list2
 list3
 lsit5

 File2
 list1
 list3
 lsit6

 File1 : difference: list6
 File2 : difference: list2,list5

 From,
 Vino


Take a look at https://dlang.org/phobos/std_algorithm_setops.html

With these inputs:

```d
import std.string : strip, splitLines;
import std.algorithm : equal, setDifference;

string[] File1 = q"EOF
list1
list2
list3
list5
EOF".strip.splitLines;

string[] File2 = q"EOF
list1
list3
list6
EOF".strip.splitLines;

unittest {
     assert(["list2", "list5"].equal(File1.setDifference(File2)));
     assert(["list6"].equal(File2.setDifference(File1)));
}
```
Sep 11 2021