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Cassidoo's Interview Question #2 - Filter in Vlang
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fn basic_filter(input []int, operation fn(int) bool) []int { | |
mut output := []int | |
for value in input { | |
if operation(value) { | |
output << value | |
} | |
} | |
return output | |
} | |
fn even_numbers(number int) bool { | |
if number % 2 == 0 { | |
return true | |
} | |
return false | |
} | |
fn odd_numbers(number int) bool { | |
return !even_numbers(number) | |
} | |
fn truthy_numbers(number int) bool { | |
if bool(number) { | |
return true | |
} | |
return false | |
} | |
fn falsy_numbers(number int) bool { | |
return !truthy_numbers(number) | |
} | |
fn main() { | |
input := [1, 2, 3, 4, 5, 6, 7, 8, 9, 0] | |
result1 := basic_filter(input, even_numbers) | |
result2 := basic_filter(input, odd_numbers) | |
result3 := basic_filter(input, truthy_numbers) | |
result4 := basic_filter(input, falsy_numbers) | |
println('Filter in Vlang') | |
println('Input: ' + input.str()) | |
println('Even numbers: ' + result1.str()) | |
println('Odd numbers: ' + result2.str()) | |
println('Truthy numbers: ' + result3.str()) | |
println('Falsy numbers: ' + result4.str()) | |
yr := input[1].str() + '' + input[9].str() + '' + input[1].str() + '' + input[9].str() + '' | |
println('Happy $yr :D ~') | |
} |
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