Grave (`)

𝔽` 𝕩: Scan

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Scan over 𝕩 with 𝔽 from left to right, producing intermediate values.

↗️
    +` 1‿2‿3
⟨ 1 3 6 ⟩

    ⟨1, 1+2, (1+2)+3⟩
⟨ 1 3 6 ⟩

    -` 1‿2‿3
⟨ 1 ¯1 ¯4 ⟩

    ⟨1, 1-2, (1-2)-3⟩
⟨ 1 ¯1 ¯4 ⟩

𝕨 𝔽` 𝕩: Scan With initial

Monadic scan, but use 𝕨 as initial left argument.

↗️
    5 +` 1‿2‿3
⟨ 6 8 11 ⟩

    ⟨5+1, (5+1)+2, ((5+1)+2)+3⟩
⟨ 6 8 11 ⟩

    5 -` 1‿2‿3
⟨ 4 2 ¯1 ⟩

    ⟨5-1, (5-1)-2, ((5-1)-2)-3⟩
⟨ 4 2 ¯1 ⟩