character encoding - What is a code point and code space? -


i reading wikipedia article on code points, not sure if understand correctly.

for example, character encoding scheme ascii comprises 128 code points in range 0hex 7fhex

so 0hex code point?

also not find on code space.

ps. if it's duplicate please post link in comments , i'll remove question.

a code point numerical code refers single element/character in specific coded character set, sentence means ascii has 128 possible symbols (only part of printable characters) , each 1 of has related numerical code can identified/addressed, code point.

for alternative wording, check out this joel's post , this summary oracle introduces concept of code unit :)

to give real world example of code points are, consider unicode character snowman ☃, code point (with unicode syntax u+<code point in hex>) u+2603.


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