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How to check if at least one element of an array is true in D
Theodore Kelechukwu OnyejiakuOverview
We use the any() method to check if at least a single element in an array is true.
Syntax
any(array)
Parameters
array: The array we want to check.
Return value
A boolean value is returned. If at least one element is true, then true is returned. Otherwise, false is returned.
Example
// import std.stdio
import std.stdio;
import std.algorithm;
// main method
void main(string[] args) {
// create array
int[] array1 = [50, 20, 10, 45, 34];
int[] array2 = [0, 0, 0, 0];
int[] array3 = [false, false, true];
string[] array4 = [];
// check if elements are true
writeln(any(array1)); // true
writeln(any(array2)); // false
writeln(any(array3)); // true
writeln(any(array4)); // false
}Check if at least an element is true in an Array
Explanation
- Lines 8–11: We create four arrays.
- Lines 14–17: The arrays we create are checked to see if at least one element evaluates to true using the
any()method. Then, we print the values.
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