From type/Cool

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sub ord(Str(Cool))
method ord()

Coerces the invocant (or in sub form, its argument) to Str, and returns the Unicode code point number of the first code point.

say 'a'.ord;            # OUTPUT: «97␤»

The inverse operation is chr.

Mnemonic: returns an ordinal number

From type/Str

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multi sub    ord(Str:D  --> Int:D)
multi method ord(Str:D: --> Int:D)

Returns the codepoint number of the base characters of the first grapheme in the string.

Example:

ord("A"); # 65 
"«".ord;  # 171