Useful API Functions
String
Copying
Notice: except when written otherwise, all indices are 1-based. Valid indices range from 1 to the string's size.
copyFrom:to:
aString copyFrom:startIndex to:endIndex
Example:
'hello world' copyFrom:1 to:5.
=> 'hello'
copyFrom:
aString copyFrom:startIndex'
Example:
'hello world' copyFrom:6.
=> ' world'