Morph.OneToOne from an Int.

Keep in mind that Integer -> Int can overflow since Int is fixed in bit size while Integer is not.

Inverse of Int.Morph.integer

Morph from a Decimal without digits after the decimal point.

Other possibilities of handling the fraction after the decimal points are

• Decimal.truncate
• Decimal.floor
• Decimal.ceiling

MorphValue from an Integer

MorphRow from Chars.

You can then of course work with the Integer type directly, or convert it to for example an Int

import Morph
import List.Morph
import Int.Morph


-- works with natural numbers
"123"
    |> Morph.toNarrow
        (Int.Morph.integer
            |> Morph.overRow Integer.Morph.chars
            |> Morph.rowFinish
            |> Morph.over List.Morph.string
        )
--> Ok 123


-- works with negative numbers
"-123"
    |> Morph.toNarrow
        (Int.Morph.integer
            |> Morph.overRow Integer.Morph.chars
            |> Morph.rowFinish
            |> Morph.over List.Morph.string
        )
--> Ok -123


-- a decimal number is _not_ an integer
"3.14"
    |> Morph.toNarrow
        (Int.Morph.integer
            |> Morph.overRow Integer.Morph.chars
            |> Morph.rowFinish
            |> Morph.over List.Morph.string
        )
    |> Result.toMaybe
--> Nothing


-- exponential notation, other letters, symbols etc make it fail
"3e10"
    |> Morph.toNarrow
        (Int.Morph.integer
            |> Morph.overRow Integer.Morph.chars
            |> Morph.rowFinish
            |> Morph.over List.Morph.string
        )
    |> Result.toMaybe
--> Nothing

MorphRow from a given count of Bits in 2's complement, and with a given endianness.

For toBroad: If the number is greater than the capacity possible with the given bit count, the greatest possible value will be returned instead.