On Friday, 17 June 2022 at 01:04:28 UTC, Paul Backus wrote:
On Thursday, 16 June 2022 at 23:59:06 UTC, Antonio wrote:
Is it there any way to apply UFCS on the returned method in
the same expression?
Nope. The way UFCS works is that allows you to call free
functions using member-function syntax, and member-function
syntax is always `object.memberName`, so UFCS only works for
functions that have a name, not anonymous functions.
Lets tray with a name :-)
```d
auto doSomething(string text)
{
return (string text2)
{
import std.stdio;
writeln(text,",",text2);
};
}
void main()
{
auto doHello = doSomething("Hello");
doHello("X");
"X".doHello();
}
```
Error: onlineapp.d(16): Error: no property `doHello` for type
`string`
It's true... the favomous "Rationale: Local function symbols are
not considered by UFCS to avoid unexpected name conflicts." (I
consider it absurd... but I'n no-one)
Well lets try another possibility taking in account the power of
CTFE
```d
auto doSomething(string text)
{
return (string text2)
{
import std.stdio;
writeln(text,",",text2);
};
}
auto doHello = doSomething("Hello");
void main()
{
doHello("X");
"X".doHello();
}
```
Error: onlineapp.d(3): Error: closures are not yet supported in
CTFE
:-/
UFCS vs Functional curring... nice battle :-)
