...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; 顯然,此...
...置,看以下幾個(gè)例子就懂了 preg_match(~(?:(Sat)ur|(Sun))day~, Saturday, $matches) => [Saturday, Sat, ] # 最后一個(gè)其實(shí)是不存在的,寫在這里是為了闡釋概念 preg_match(~(?:(Sat)ur|(Sun))day~, Sunday, $matches) => [Sunday, , Sun] preg_m...
...H:i:s }} 示例:template.html Template {% if day1 == saturday %} 今天星期六 出去浪 {% endif %} {% if day2 == saturday %} 今天星期六 出去浪哦 {% elif day2 == sunday %}...
...EK.put(4, Thursday); WEEK.put(5, Friday); WEEK.put(6, Saturday); WEEK.put(7, Sunday); } /** * Java 8之前的版本 */ @Test public void filterMapByKey () {...
...c enum Day { SUNDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY } 你應(yīng)該在需要表示一組固定常量時(shí)使用枚舉類型,這包括自然枚舉類型,例如太陽系中的行星和數(shù)據(jù)集,你可以在編譯時(shí)知道所有可能的值 — 例如,菜單上的選...
...= friday) { return true; } elseif ($day === saturday) { return true; } elseif ($day === sunday) { return true; } ...
...字enum enum Day { MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY } 相當(dāng)簡(jiǎn)潔,在定義枚舉類型時(shí)我們使用的關(guān)鍵字是enum,與class關(guān)鍵字類似,只不過前者是定義枚舉類型,后者是定義類類型。 1.2 枚舉類的實(shí)現(xiàn)原理 我們大概...
...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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