...HURSDAY = 3; private static final int FRIDAY = 4; private static final int SATURDAY = 5; private static final int SUNDAY = 6; private static final int JANUARY = 7; private int day = JANUARY; 显然,此...
...置,看以下几个例子就懂了 preg_match(~(?:(Sat)ur|(Sun))day~, Saturday, $matches) => [Saturday, Sat, ] # 最后一个其实是不存在的,写在这里是为了阐释概念 preg_match(~(?:(Sat)ur|(Sun))day~, Sunday, $matches) => [Sunday, , Sun] preg_m...
...H:i:s }} 示例:template.html Template {% if day1 == saturday %} 今天星期六 出去浪 {% endif %} {% if day2 == saturday %} 今天星期六 出去浪哦 {% elif day2 == sunday %}...
...EK.put(4, Thursday); WEEK.put(5, Friday); WEEK.put(6, Saturday); WEEK.put(7, Sunday); } /** * Java 8之前的版本 */ @Test public void filterMapByKey () {...
...c enum Day { SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY } 你应该在需要表示一组固定常量时使用枚举类型,这包括自然枚举类型,例如太阳系中的行星和数据集,你可以在编译时知道所有可能的值 — 例如,菜单上的选...
...= friday) { return true; } elseif ($day === saturday) { return true; } elseif ($day === sunday) { return true; } ...
...字enum enum Day { MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY } 相当简洁,在定义枚举类型时我们使用的关键字是enum,与class关键字类似,只不过前者是定义枚举类型,后者是定义类类型。 1.2 枚举类的实现原理 我们大概...
...atetime64[ns] >>> daterng.dt.day_name() 0 Friday 1 Friday 2 Saturday 3 Sunday 4 Saturday 5 Saturday 6 Sunday 7 Monday 8 Sunday dtype: object >>> # 查看下半年 >>...
...atetime64[ns] >>> daterng.dt.day_name() 0 Friday 1 Friday 2 Saturday 3 Sunday 4 Saturday 5 Saturday 6 Sunday 7 Monday 8 Sunday dtype: object >>> # 查看下半年 >>...
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