feat: every

every.go

@@ -0,0 +1,12 @@
+package underscore
+
+// Every returns true if all the values in the slice pass the predicate truth test.
+// Short-circuits and stops traversing the slice if a false element is found.
+func Every[T any](values []T, predicate func(T) bool) bool {
+	for _, v := range values {
+		if !predicate(v) {
+			return false
+		}
+	}
+	return true
+}

every_test.go

@@ -0,0 +1,15 @@
+package underscore_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	u "github.com/rjNemo/underscore"
+)
+
+func TestEvery(t *testing.T) {
+	nums := []int{1, 3, 5, 7, 9}
+	isOdd := func(n int) bool { return n%2 != 0 }
+	assert.True(t, u.Every(nums, isOdd))
+}