• Michael (9/12) Jul 13 2018 Hello,
• Radu (4/17) Jul 13 2018 Do you try to call member functions? UFCS only works with free
• Michael (4/28) Jul 13 2018 I'm not intentionally trying to call member functions, no. The
• Radu (3/14) Jul 13 2018 OK, static functions of a class are static *member* functions,
• Michael (3/18) Jul 13 2018 Oh, really? Well that will explain it then. I was sure I had used
• vit (4/23) Jul 16 2018 try this:

Michael <michael toohuman.io> writes:

Hello,

I am nesting some function calls, and I'm pretty used to making 
use of D's Uniform Function Call Syntax, but I'm getting an error 
if I try to convert this line:

 createSet(createVector(langSize, index)).length;

which works, into this line:

 createVector(langSize, index).createSet.length;

receiving the error "Error: no property createSet for type 
int[]", when the signature for createSet is:

 static auto createSet(in int[] vector) pure

What am I missing here? I'm sure it's stupidly obvious but it 
expects one argument, so I'm just calling it without parentheses.

Radu <void null.pt> writes:

On Friday, 13 July 2018 at 10:21:54 UTC, Michael wrote:
 Hello,

 I am nesting some function calls, and I'm pretty used to making 
 use of D's Uniform Function Call Syntax, but I'm getting an 
 error if I try to convert this line:

 createSet(createVector(langSize, index)).length;

 which works, into this line:

 createVector(langSize, index).createSet.length;

 receiving the error "Error: no property createSet for type 
 int[]", when the signature for createSet is:

 static auto createSet(in int[] vector) pure

 What am I missing here? I'm sure it's stupidly obvious but it 
 expects one argument, so I'm just calling it without 
 parentheses.

Do you try to call member functions? UFCS only works with free 
functions, meaning declared at module level.

https://dlang.org/spec/function.html#pseudo-member

Michael <michael toohuman.io> writes:

On Friday, 13 July 2018 at 10:52:54 UTC, Radu wrote:
 On Friday, 13 July 2018 at 10:21:54 UTC, Michael wrote:
 Hello,

 I am nesting some function calls, and I'm pretty used to 
 making use of D's Uniform Function Call Syntax, but I'm 
 getting an error if I try to convert this line:

 createSet(createVector(langSize, index)).length;

 which works, into this line:

 createVector(langSize, index).createSet.length;

 receiving the error "Error: no property createSet for type 
 int[]", when the signature for createSet is:

 static auto createSet(in int[] vector) pure

 What am I missing here? I'm sure it's stupidly obvious but it 
 expects one argument, so I'm just calling it without 
 parentheses.

 Do you try to call member functions? UFCS only works with free 
 functions, meaning declared at module level.

 https://dlang.org/spec/function.html#pseudo-member

I'm not intentionally trying to call member functions, no. The 
functions are all static functions of a class, but the chaining 
of them using UFCS doesn't seem to work.

Radu <void null.pt> writes:

On Friday, 13 July 2018 at 11:12:47 UTC, Michael wrote:
 On Friday, 13 July 2018 at 10:52:54 UTC, Radu wrote:
 On Friday, 13 July 2018 at 10:21:54 UTC, Michael wrote:
 [...]

 Do you try to call member functions? UFCS only works with free 
 functions, meaning declared at module level.

 https://dlang.org/spec/function.html#pseudo-member

 I'm not intentionally trying to call member functions, no. The 
 functions are all static functions of a class, but the chaining 
 of them using UFCS doesn't seem to work.

OK, static functions of a class are static *member* functions, 
they are not free functions.

Michael <michael toohuman.io> writes:

On Friday, 13 July 2018 at 11:17:32 UTC, Radu wrote:
 On Friday, 13 July 2018 at 11:12:47 UTC, Michael wrote:
 On Friday, 13 July 2018 at 10:52:54 UTC, Radu wrote:
 On Friday, 13 July 2018 at 10:21:54 UTC, Michael wrote:
 [...]

 Do you try to call member functions? UFCS only works with 
 free functions, meaning declared at module level.

 https://dlang.org/spec/function.html#pseudo-member

 I'm not intentionally trying to call member functions, no. The 
 functions are all static functions of a class, but the 
 chaining of them using UFCS doesn't seem to work.

 OK, static functions of a class are static *member* functions, 
 they are not free functions.

Oh, really? Well that will explain it then. I was sure I had used 
this syntax before but perhaps not. Thanks for your help!

vit <vit vit.vit> writes:

On Friday, 13 July 2018 at 11:37:09 UTC, Michael wrote:
 On Friday, 13 July 2018 at 11:17:32 UTC, Radu wrote:
 On Friday, 13 July 2018 at 11:12:47 UTC, Michael wrote:
 On Friday, 13 July 2018 at 10:52:54 UTC, Radu wrote:
 On Friday, 13 July 2018 at 10:21:54 UTC, Michael wrote:
 [...]

 Do you try to call member functions? UFCS only works with 
 free functions, meaning declared at module level.

 https://dlang.org/spec/function.html#pseudo-member

 I'm not intentionally trying to call member functions, no. 
 The functions are all static functions of a class, but the 
 chaining of them using UFCS doesn't seem to work.

 OK, static functions of a class are static *member* functions, 
 they are not free functions.

 Oh, really? Well that will explain it then. I was sure I had 
 used this syntax before but perhaps not. Thanks for your help!

try this:

import std.functional : pipe;

createVector(langSize, index).pipe!createSet.length;