public function test03()
{
### array_forget(&$array, $keys)
# forget by single key
$worker = $this->source_array;
Util::array_forget('Candy', $worker);
$this->assertEquals(['Apples' => 'One', 'Beets' => 2], $worker);
# forget by dot path
$worker = $this->source_array;
Util::array_forget('Candy.start', $worker);
$this->assertEquals(['Apples' => 'One', 'Beets' => 2, 'Candy' => ['end' => 'then']], $worker);
### array_extract_list($find_key, $array)
$records = ['George' => ['age' => 26, 'gender' => 'Male'], 'Lois' => ['age' => 32, 'gender' => 'Female']];
$this->assertEquals([26, 32], Util::extract_column('age', $records));
### (simple) array_make_compare_list(array $array)
$worker = Util::assoc_from_str('name:Laura, access:Administrator');
$this->assertEquals(['name=`Laura`', 'access=`Administrator`'], Util::make_compare($worker));
# empty returns null
$this->assertNull(Util::make_compare([]));
# list returns null on invalid array (must be associative)
$this->assertNull(Util::make_compare(['bad']));
}
