return the other functions of the void main()

[Dennis Ritchie via Digitalmars-d-learn]

On Thursday, 9 April 2015 at 12:57:26 UTC, Jack Applegame wrote:
>> I quite often have to write similar designs:
>>
>> -----
>> import std.stdio;
>>
>> void main() {
>>
>> 	auto a = [ 1, 2, 3, 4, 5 ];
>>
>> 	foreach (e; a) {
>> 		if (e == 4) {
>> 			writeln("Yes");
>> 			return;
>> 		}
>> 	}
>> 	
>> 	writeln("No");
>> }
>> -----
>>
>> But is not it easier to write :)
>>
>> import std.stdio;
>>
>> void main() {
>>
>> 	auto a = [ 1, 2, 3, 4, 5 ];
>>
>> 	foreach (e; a) {
>> 		if (e == 4) {
>> 			return writeln("Yes");
>> 		}
>> 	}
>> 	
>> 	writeln("No");
>> }
>
> import std.stdio;
> import std.algorithm;
> import std.array;
>
> void main() {
>   auto a = [ 1, 2, 3, 4, 5 ];
>   writeln(a.find(4).empty ? "No" : "Yes");
> }

import std.stdio;

void main() {

	foreach (...) {
		foreach (...) {
			...
			if (...) {
				...
				return writeln("Yes");
			}
			...
		}
		...
	}

	...
	
	writeln("No");
}

No design can be completely arbitrary:

-----
import std.stdio;

void main() {

	foreach (...) {
		foreach (...) {
			...
			if (...) {
				...
				return writeln("Yes");
			}
			...
		}
		...
	}

	...
	
	writeln("No");
}