• Vino (10/10) Nov 09 2020 Hi All,
• k2aj (8/18) Nov 09 2020 Strings in D are actually immutable arrays of chars, so you can
• =?UTF-8?Q?Ali_=c3=87ehreli?= (15/17) Nov 09 2020 If those concatenations with the ~ operators prove to be costly at
• Vino (3/21) Nov 09 2020 Hi Both,
• Ferhat =?UTF-8?B?S3VydHVsbXXFnw==?= (3/21) Nov 09 2020 I am responding to this just for my personal records. I wish we
• =?UTF-8?B?0JLQuNGC0LDQu9C40Lkg0KTQsNC0?= =?UTF-8?B?0LXQtdCy?= (15/25) Nov 09 2020 Some like this:

Vino <akashvino79 gmail.com> writes:

Hi All,

    Request your help on how to extract sub string from a string, 
below is an example in PHP, need your help on how to do the same 
in D.

$text = "welcome2worldinfo";
$hg = strtoupper(substr($text , 0, 7).'-'.substr($text, 7, 
1).'-'.substr($text, 8, 5));
print_r($hg) \\ Output : WELCOME-2-WORLD

From,
Vino.B

k2aj <krzysztof.jajesnica gmail.com> writes:

On Monday, 9 November 2020 at 16:00:28 UTC, Vino wrote:
 Hi All,

    Request your help on how to extract sub string from a 
 string, below is an example in PHP, need your help on how to do 
 the same in D.

 $text = "welcome2worldinfo";
 $hg = strtoupper(substr($text , 0, 7).'-'.substr($text, 7, 
 1).'-'.substr($text, 8, 5));
 print_r($hg) \\ Output : WELCOME-2-WORLD

 From,
 Vino.B

Strings in D are actually immutable arrays of chars, so you can 
slice them to get a substring:

import std.string : toUpper;

string text = "welcome2worldinfo";
string hg = toUpper(text[0..7] ~ "-" ~ text[7..8] ~ "-" ~ 
text[8..13]);
writeln(hg);

=?UTF-8?Q?Ali_=c3=87ehreli?= <acehreli yahoo.com> writes:

On 11/9/20 9:53 AM, k2aj wrote:

 string text = "welcome2worldinfo";
 string hg = toUpper(text[0..7] ~ "-" ~ text[7..8] ~ "-" ~ text[8..13]);

If those concatenations with the ~ operators prove to be costly at 
runtime, the following range expression may be faster because it does 
not allocate any memory:

import std.string;
import std.range;
import std.algorithm;
import std.stdio;

void main() {

   string text = "welcome2worldinfo";
   auto hg = chain(text[0..7], only('-'), text[7..8], only('-'), 
text[8..13]).map!toUpper;
   writeln(hg);
}

Ali

Vino <akashvino79 gmail.com> writes:

On Monday, 9 November 2020 at 18:55:44 UTC, Ali Çehreli wrote:
 On 11/9/20 9:53 AM, k2aj wrote:

 string text = "welcome2worldinfo";
 string hg = toUpper(text[0..7] ~ "-" ~ text[7..8] ~ "-" ~

 text[8..13]);

 If those concatenations with the ~ operators prove to be costly 
 at runtime, the following range expression may be faster 
 because it does not allocate any memory:

 import std.string;
 import std.range;
 import std.algorithm;
 import std.stdio;

 void main() {

   string text = "welcome2worldinfo";
   auto hg = chain(text[0..7], only('-'), text[7..8], only('-'), 
 text[8..13]).map!toUpper;
   writeln(hg);
 }

 Ali

Hi Both,

   Thank you very much, your solution resolved our issue.

Ferhat =?UTF-8?B?S3VydHVsbXXFnw==?= <aferust gmail.com> writes:

On Monday, 9 November 2020 at 18:55:44 UTC, Ali Çehreli wrote:
 On 11/9/20 9:53 AM, k2aj wrote:

 string text = "welcome2worldinfo";
 string hg = toUpper(text[0..7] ~ "-" ~ text[7..8] ~ "-" ~

 text[8..13]);

 If those concatenations with the ~ operators prove to be costly 
 at runtime, the following range expression may be faster 
 because it does not allocate any memory:

 import std.string;
 import std.range;
 import std.algorithm;
 import std.stdio;

 void main() {

   string text = "welcome2worldinfo";
   auto hg = chain(text[0..7], only('-'), text[7..8], only('-'), 
 text[8..13]).map!toUpper;
   writeln(hg);
 }

 Ali

I am responding to this just for my personal records. I wish we 
could've a "add to favorites" option here.

=?UTF-8?B?0JLQuNGC0LDQu9C40Lkg0KTQsNC0?= =?UTF-8?B?0LXQtdCy?= writes:

On Monday, 9 November 2020 at 16:00:28 UTC, Vino wrote:
 Hi All,

    Request your help on how to extract sub string from a 
 string, below is an example in PHP, need your help on how to do 
 the same in D.

 $text = "welcome2worldinfo";
 $hg = strtoupper(substr($text , 0, 7).'-'.substr($text, 7, 
 1).'-'.substr($text, 8, 5));
 print_r($hg) \\ Output : WELCOME-2-WORLD

 From,
 Vino.B

Some like this:

substr($text , 0, 7) // --> text[ 0 .. 7 ]
substr($text, 7, 1)  // --> text[ 7 .. 7+1 ]
substr($text, 8, 5)  // --> text[ 8 .. 8+5 ]

$hg = a . b . c      // --> string hg = a ~ b ~ c;

strtoupper( s )      // --> s.toUpper

print_r($hg)         // --> writeln( hg )

And import names:
import std.uni : toUpper;
import std.stdio : writeln;

Help:
https://dlang.org/phobos/std_uni.html
https://dlang.org/phobos/std_stdio.html
https://dlang.org/spec/arrays.html#strings