digitalmars.D.learn - Real simple question... for good programmers
- WhatMeWorry (12/12) Oct 22 2022 string[] tokens = userSID.output.split!isWhite;
- Enjoys Math (3/16) Oct 22 2022 Why not `strip`? Works on ranges:
- Daniel Donnelly, Jr. (3/25) Oct 22 2022 Strip won't work because it only works on the beginning and ends
- =?UTF-8?Q?Ali_=c3=87ehreli?= (6/8) Oct 22 2022 Could you please show minimal compilable code that demonstrates the
- Enjoys Math (35/35) Oct 22 2022 __MWE Code:__
- Paul Backus (26/30) Oct 22 2022 Easiest way is to use [`filter`][1]. Here's an example:
- Steven Schveighoffer (6/23) Oct 22 2022 Try just split without the `isWhite`. If you look at the docs, you will ...
string[] tokens = userSID.output.split!isWhite;
writeln("tokens = ", tokens);
tokens = ["SID", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "S-1-5-21-3823976785-3597194045-4221507747-1779", "",
"", "", "", "", "", "", ""]
Is there a clever way that I can discard all the extra null
strings in the resultant string array?
I've been playing with isControl, whitespace, etc. Ready to rip
my hair out.
Oct 22 2022
On Saturday, 22 October 2022 at 21:53:05 UTC, WhatMeWorry wrote:
string[] tokens = userSID.output.split!isWhite;
writeln("tokens = ", tokens);
tokens = ["SID", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "",
"S-1-5-21-3823976785-3597194045-4221507747-1779", "", "", "",
"", "", "", "", ""]
Is there a clever way that I can discard all the extra null
strings in the resultant string array?
I've been playing with isControl, whitespace, etc. Ready to rip
my hair out.
Why not `strip`? Works on ranges:
https://dlang.org/phobos/std_algorithm_mutation.html#.strip
Oct 22 2022
Daniel Donnelly, Jr. <enjoysmath gmail.com> On Saturday, 22 October 2022 at 22:01:09 UTC, Enjoys Math wrote:On Saturday, 22 October 2022 at 21:53:05 UTC, WhatMeWorry wrote:Strip won't work because it only works on the beginning and ends of the range. What you want is `remove`. See my other MWE post.string[] tokens = userSID.output.split!isWhite; writeln("tokens = ", tokens); tokens = ["SID", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "S-1-5-21-3823976785-3597194045-4221507747-1779", "", "", "", "", "", "", "", ""] Is there a clever way that I can discard all the extra null strings in the resultant string array? I've been playing with isControl, whitespace, etc. Ready to rip my hair out.Why not `strip`? Works on ranges: https://dlang.org/phobos/std_algorithm_mutation.html#.strip
Oct 22 2022
On 10/22/22 14:53, WhatMeWorry wrote:
string[] tokens = userSID.output.split!isWhite;
writeln("tokens = ", tokens);
Could you please show minimal compilable code that demonstrates the
issue. I spent some time with some guesses but failed (to get my code to
compile with std.array.split).
Ali
P.S. Sorry for also sending email.
Oct 22 2022
__MWE Code:__
```
module DlangForumsMWE;
import std.stdio;
import std.algorithm.mutation;
int main()
{
//string[] tokens = userSID.output.split!isWhite;
//writeln("tokens = ", tokens);
auto tokens = ["SID", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "",
"", "", "",
"S-1-5-21-3823976785-3597194045-4221507747-1779", "", "", "", "",
"", "", "", ""];
writeln("Before:\n", tokens);
writeln();
tokens = tokens.remove!(x => x == "");
writeln("After:\n", tokens);
readln();
return 0;
}
```
__Outputs:__
```
Before:
["SID", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "S-1-5-21-3823976785-3597194045-4221507747-1779", "", "", "",
"", "", "", "", ""]
After:
["SID", "S-1-5-21-3823976785-3597194045-4221507747-1779"]
```
Oct 22 2022
On Saturday, 22 October 2022 at 21:53:05 UTC, WhatMeWorry wrote:string[] tokens = userSID.output.split!isWhite; writeln("tokens = ", tokens);[...]Is there a clever way that I can discard all the extra null strings in the resultant string array?Easiest way is to use [`filter`][1]. Here's an example: ```d import std.algorithm: splitter, filter; import std.uni: isWhite; // or use std.ascii for non-unicode input import std.array: array; import std.stdio: writeln; string exampleText = "Hello 123-456-ABC x\ny\tz\r\nwvu goodbye"; void main() { string[] tokens = exampleText .splitter!isWhite .filter!(t => t.length > 0) .array; writeln("tokens = ", tokens); } ``` I've also used the lazily-evaluated [`splitter`][2] instead of the eagerly-evaluated `split`, to avoid allocating a temporary array unnecessarily. [1]: https://phobos.dpldocs.info/std.algorithm.iteration.filter.html [2]: https://phobos.dpldocs.info/std.algorithm.iteration.splitter.3.html
Oct 22 2022
On 10/22/22 5:53 PM, WhatMeWorry wrote:
string[] tokens = userSID.output.split!isWhite;
writeln("tokens = ", tokens);
tokens = ["SID", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "",
"S-1-5-21-3823976785-3597194045-4221507747-1779", "", "", "", "", "",
"", "", ""]
Is there a clever way that I can discard all the extra null strings in
the resultant string array?
I've been playing with isControl, whitespace, etc. Ready to rip my hair
out.
Try just split without the `isWhite`. If you look at the docs, you will see:
"When no delimiter is provided, strings are split into an array of
words, using whitespace as delimiter. Runs of whitespace are merged
together (no empty words are produced)."
-Steve
Oct 22 2022