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digitalmars.D - D string interpolation

reply Imperatorn <johan_forsberg_86 hotmail.com> writes:
Are there any easy ways to achieve string interpolation in D a la 
$"Hello {adjective} world"?

Thanks
Oct 04 2020
next sibling parent reply Mike Parker <aldacron gmail.com> writes:
On Sunday, 4 October 2020 at 13:16:53 UTC, Imperatorn wrote:

 Are there any easy ways to achieve string interpolation in D a 
 la $"Hello {adjective} world"?

 Thanks


Currently, no. There's a DIP from Adam and Steve currently going 
through the review process. It recently completed the first round 
of community review. They intend to make significant revisions, 
so it will require at least one more round of community review 
before moving forward.

DIP 1036:
https://github.com/dlang/DIPs/blob/master/DIPs/DIP1036.md

The review summary and links to the discussion & feedback threads:
https://github.com/dlang/DIPs/blob/master/DIPs/DIP1036.md#reviews

DIP 1036 was an iteration on an earlier DIP by Walter that he and 
Atila ultimately rejected:
https://github.com/dlang/DIPs/blob/master/DIPs/rejected/DIP1027.md
Oct 04 2020
next sibling parent Imperatorn <johan_forsberg_86 hotmail.com> writes:
On Sunday, 4 October 2020 at 14:04:04 UTC, Mike Parker wrote:

 On Sunday, 4 October 2020 at 13:16:53 UTC, Imperatorn wrote:

 [...]


 Currently, no. There's a DIP from Adam and Steve currently 
 going through the review process. It recently completed the 
 first round of community review. They intend to make 
 significant revisions, so it will require at least one more 
 round of community review before moving forward.

 DIP 1036:
 https://github.com/dlang/DIPs/blob/master/DIPs/DIP1036.md

 The review summary and links to the discussion & feedback 
 threads:
 https://github.com/dlang/DIPs/blob/master/DIPs/DIP1036.md#reviews

 DIP 1036 was an iteration on an earlier DIP by Walter that he 
 and Atila ultimately rejected:
 https://github.com/dlang/DIPs/blob/master/DIPs/rejected/DIP1027.md


Splendid!
Oct 04 2020
prev sibling parent reply bitwise <bitwise.pvt gmail.com> writes:
On Sunday, 4 October 2020 at 14:04:04 UTC, Mike Parker wrote:

 On Sunday, 4 October 2020 at 13:16:53 UTC, Imperatorn wrote:

 [...]


 [...] so it will require at least one more round of community 
 review before moving forward.

 DIP 1036:
 https://github.com/dlang/DIPs/blob/master/DIPs/DIP1036.md


I hope they change the syntax to favor readers of code, not 
writers. As with D's templates, reading code is made more 
difficult by needlessly adding syntactical variations for 
language features.

Example:

writefln(i"I ate $apples and ${%d}bananas totaling $(apples + 
bananas) fruit.");


 $apples



 $(apples + bananas)


If I was trying to quickly scan code to pick out variables, 
there's two different things I would have to look for.

Example:


 Foo!int



 Foo!(bool, int)


Same problem.


 Foo;



 Foo();


Same problem.

I'm not sure if the reasoning is to try and reduce noise in the 
"common" case, or to appease people that think not having to type 
() will actually help them get things done faster, but neither 
reason seems valid to me.

Also, why would the less significant part of the construct be in 
the curly braces?


 ${%d}bananas


Why not like this?


 i"{apples} bar"



 i"{apples + bananas} bar"



 i"{bananas:%d} bar"



 Bar!(int)



 Bar!(bool, int)



 Bar();



 Bar();


In all honesty, part of the reason I lost interest in D is 
because of the type of quirks listed above. I don't believe the 
intended benefit, whatever it may be, is worth the sacrifice of 
consistency.
Oct 04 2020
parent reply Adam D. Ruppe <destructionator gmail.com> writes:
On Sunday, 4 October 2020 at 17:53:55 UTC, bitwise wrote:

 I hope they change the syntax


The new draft ditches most the old syntax.

Not much point talking about it until it is released though, but 
you'll probably like the new draft a lot more.
Oct 04 2020
parent bitwise <bitwise.pvt gmail.com> writes:
On Sunday, 4 October 2020 at 18:09:15 UTC, Adam D. Ruppe wrote:

 On Sunday, 4 October 2020 at 17:53:55 UTC, bitwise wrote:

 I hope they change the syntax


 The new draft ditches most the old syntax.

 Not much point talking about it until it is released though, 
 but you'll probably like the new draft a lot more.


Thanks =D
Awesome.
Oct 04 2020
prev sibling next sibling parent reply Paul Backus <snarwin gmail.com> writes:
On Sunday, 4 October 2020 at 13:16:53 UTC, Imperatorn wrote:

 Are there any easy ways to achieve string interpolation in D a 
 la $"Hello {adjective} world"?

 Thanks


https://code.dlang.org/packages/scriptlike#string-interpolation
Oct 04 2020
parent Imperatorn <johan_forsberg_86 hotmail.com> writes:
On Sunday, 4 October 2020 at 14:19:17 UTC, Paul Backus wrote:

 On Sunday, 4 October 2020 at 13:16:53 UTC, Imperatorn wrote:

 Are there any easy ways to achieve string interpolation in D a 
 la $"Hello {adjective} world"?

 Thanks


 https://code.dlang.org/packages/scriptlike#string-interpolation


Looks like an acceptable workaround for now. Thanks!
Oct 04 2020
prev sibling parent reply mw <mingwu gmail.com> writes:
On Sunday, 4 October 2020 at 13:16:53 UTC, Imperatorn wrote:

 Are there any easy ways to achieve string interpolation in D a 
 la $"Hello {adjective} world"?


I also have one:

https://code.dlang.org/packages/jdiutil

```
         // multiple vars separated by ';'
         // _S with var name; _s without var name
         writeln(mixin(_S!"with    var name: {i; d; thePoint}"));
         writeln(mixin(_s!"without var name: {i; d; thePoint}"));
```
Oct 04 2020
parent reply Imperatorn <johan_forsberg_86 hotmail.com> writes:
On Sunday, 4 October 2020 at 16:27:59 UTC, mw wrote:

 On Sunday, 4 October 2020 at 13:16:53 UTC, Imperatorn wrote:

 Are there any easy ways to achieve string interpolation in D a 
 la $"Hello {adjective} world"?


 I also have one:

 https://code.dlang.org/packages/jdiutil

 ```
         // multiple vars separated by ';'
         // _S with var name; _s without var name
         writeln(mixin(_S!"with    var name: {i; d; thePoint}"));
         writeln(mixin(_s!"without var name: {i; d; thePoint}"));
 ```


Cool
Oct 04 2020
parent mw <mingwu gmail.com> writes:
On Sunday, 4 October 2020 at 16:31:50 UTC, Imperatorn wrote:

 On Sunday, 4 October 2020 at 16:27:59 UTC, mw wrote:

 On Sunday, 4 October 2020 at 13:16:53 UTC, Imperatorn wrote:

 Are there any easy ways to achieve string interpolation in D 
 a la $"Hello {adjective} world"?


 I also have one:

 https://code.dlang.org/packages/jdiutil

 ```
         // multiple vars separated by ';'
         // _S with var name; _s without var name
         writeln(mixin(_S!"with    var name: {i; d; 
 thePoint}"));
         writeln(mixin(_s!"without var name: {i; d; 
 thePoint}"));
 ```




multiple vars separated by ';'

because, you can also pass in `funcCAll(arg, arg2)`
Oct 04 2020