Days between dates: Difference between revisions
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Days Difference : 335
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=={{header|BQN}}==
The <code>date</code> namespace is taken from bqn-libs. <code>DBw</code> is the final function which calculates the proper difference between two date strings.
<lang bqn>DivMod ← ⌊∘÷˜ ⋈ |
date ← {
o ← 719469
y ← 365.25
dur ← ⟨(100×y)-0.75, y, 30.6⟩
off ← ⟨o-0.25, 0.75, 0.41⟩
From ⇐ {
y‿m‿d ← 𝕩
f ← 0 > m -↩ 3
(d-o) +´ ⌊ off +⌾(¯1⊸⊑) dur × (100 DivMod y-f) ∾ ⟨m+12×f⟩
}
To ⇐ {
t←𝕩
c‿y‿m ← dur { d‿m ← 𝕨 DivMod 𝕩+t ⋄ t↩⌊m ⋄ d }¨ off
m -↩ 12×10≤m
⟨(100×c)+y+m<0, 3+m, 1+t⟩
}
}
Split←(⊢-˜+`׬)∘=⊔⊢
ToI←10⊸×⊸+˜´∘⌽-⟜'0'
S2D←ToI¨ '-'⊸Split
DBw ← -○(date.From S2D)</lang>
<pre> "2019-09-30" DBw "2019-01-01"
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=={{header|C++}}==
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