The third parameter is the error message returned when the validation fails.
Re-understanding OO: Object-oriented programming is an idea to think about software design structure with object-oriented thinking, thus strengthening the object-oriented programming paradigm. Object-oriented features are encapsulation, inheritance and polymorphism. "Do these count?" . So from that beginning, when I design a class, I keep reminding myself of the following three points:
Sourceable source1 = new SourceSub1 ();
姐不就发表一下自己的看法吗？有什么大惊小怪的。
她怕的就是出现眼前这样的结果。
1. Zhao Minji
Zhang Yange: The interface has been recruiting people. Of course, we are recruiting people who meet our requirements.
Stimulate
陈平担忧道：大王，我主要担心的是项羽一石二鸟，先派大王您截杀熊心。
參加晒所有興趣班，咁先可以加強競爭，唔會落段於人？
This is a full report of our victory at the death rift. You go and give this report to Lord Mograine-he is in Archerus. I have already written your heroic deeds in the report. Mograine will certainly reward you well, < play more friends >.
Why on earth do female reporters of the NPC and CPPCC fight so hard? Because resources are indeed very limited. Hundreds of reporters attended each press conference, but only 10 people finally got the chance to ask questions.
L以自己的生命为代价设下陷阱准备一举击溃夜神月，不料，多年的搭档渡意外身亡。L决定在自己最后的23天中解决渡所留下的任务。直升机送来了一箱给渡的礼物，里面竟是一个男孩——他是遭灭顶之灾的泰国小村的唯一幸存者。L从男孩随身携带的磁碟资料中得知，该事件与恐怖的杀人病毒有关。此时，少女真希带着父亲的遗物来找渡，她也是这场阴谋的受害者。追踪而来的杀手已然赶到，L带着两个孩子开始了逃亡。只剩6天了，L决定与阴谋者决一死战。
Taste
不过与之前已经大不一样了，只见韩信从容地转过身来，完全没有之前的狼狈相，一脸温文尔雅的笑容看着自己，身后是整齐列队的汉军。
高中生宅男安芸伦也某日在樱花飘散的斜坡上命运般地遇见了班上不出众的普通少女加藤惠。
In fact, the core point of Erickson's deliberate practice is that those who are at the middle and upper levels have a strong memory ability: long-term memory. Long-term memory is an important ability to distinguish outstanding people from ordinary people. It is the direction and essence of deliberate practice.
小日向文世饰演第二夜的主角宍戸道男，刚刚失去了40年相伴的妻子舞子（竹下景子），在这时候业务用的电脑接到了一个视讯电话，画面的另一头的舞子应该是已故，却透过画面提交了离婚申请。
父子二人就此议定，银子一到，就去县里。
