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- [] 整数閉区間を示すクラス(あるいは構造体)をつくる。 | |
- [✕] 1つの整数を入力すると文字列が返ってくる | |
- [] 整数閉区間オブジェクトは下端点と上端点を持つ。 | |
- [] 文字列表現も返せる。 | |
(例: 下端点 3, 上端点 8 の整数閉区間の文字列表記は "[3,8]")。 | |
- [✕] 1と2を入力すると括弧付きの文字列が返ってくる | |
- [✕] 上端点より下端点が大きい閉区間を作ることはできない。 |
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--- | |
marp: true | |
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# 5年間で31回勉強会に参加して<br />溜まった知見とやってきたこと | |
###### Presented by HAL([@PET_HAL](https://twitter.com/PET_HAL)) | |
##### 2019/06/01<br />プログラミング生放送勉強会 第59回@サイボウズ株式会社 松山オフィス(愛媛) | |
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<?php | |
function convert_date_into_timestamp($date) { | |
if (!$date) { | |
return null; | |
} | |
return strtotime($date); | |
} | |
$list = array(); |