从数组中检索有条件的对象数量

def count_objects_with_condition(arr, condition):
    count = 0
    for obj in arr:
        if condition(obj):
            count += 1
    return count

# 示例用法
# 假设数组arr中存储了一些人的信息，每个对象包含姓名和年龄属性
arr = [
    {"name": "Alice", "age": 25},
    {"name": "Bob", "age": 30},
    {"name": "Charlie", "age": 35}
]

# 统计年龄大于等于30岁的人的数量
count = count_objects_with_condition(arr, lambda obj: obj["age"] >= 30)
print("满足条件的对象数量：", count)