Allow `it` in any functions

[i582]

Describe the feature

Imagine you have the following function:

fn get_widget_by_condition(cb fn (widget Widget) bool)

Right now, the only way to call it is to write the following code:

get_widget_by_condition(fn (widget Widget) bool) {
    return widget.id == 'button-1'
})

For a simple condition, you need to write a lot of extra code.

The language already has a magic variable it that works in some array methods:

[1,2,3].map(it.str())

So we can extend this syntax to all functions.

And the example from the beginning would look like this:

get_widget_by_condition(it.id == 'button-1')

Much more readable and faster to write.

Use Case

See above

Proposed Solution

See above

Other Information

No response

Acknowledgements

• [ ] I may be able to implement this feature request
• [ ] This feature might incur a breaking change

Version used

V 0.3.3 21b17fe.d563739

Environment details (OS name and version, etc.)

OS: macos, macOS, 13.0.1, 22A400
Processor: 10 cpus, 64bit, little endian, Apple M1 Pro
CC version: Apple clang version 14.0.0 (clang-1400.0.29.202)

getwd: /Users/petrmakhnev
vmodules: /Users/petrmakhnev/.vmodules
vroot: /Users/petrmakhnev/v
vexe: /Users/petrmakhnev/v/v
vexe mtime: 2023-01-31 09:57:40
is vroot writable: true
is vmodules writable: true
V full version: V 0.3.3 21b17fe.d563739

Git version: git version 2.37.1 (Apple Git-137.1)
Git vroot status: weekly.2023.0

[kendfss]

am I correct in inferring that you want to "allow it syntax to define predicates"?