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String Basics

for lunatic
by

Kore Lui

on 13 April 2010

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Transcript of String Basics

bit 1 or 0, it is not a question bytes 8 bits = 1 byte by the way, bytes may be
SIGNED or UNSIGNED unsigned byte: 0 255 signed byte: -128 127 One byte can only ...
respresent 256 things computers do data with ... Binary Arithmetic 0 + 0 = 0
1 + 0 = 1
1 + 1 = 10
10 + 10 = 100
... calculation with 0s and 1s so we need MORE than 1 bytes for 1 character There are more than 70000 characters in the world Play characters bytes with irb computers do characters with ... bytes 1 char = 1 or more bytes ( characters are data ) GBK uses 2 bytes
for normal characters Play characters bytes with irb (1234 = 256 * 4 + 210) : 2 bytes [4, 210] String is ... A series of characters to be continued ...
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