Integer
From Erights
Integer is one of the built-in numeric types in ELib. Integers may be literals in E language source.
In the universal environment, the Integer guard is named int.
Contents |
Maker protocol
run/1
run(string :String) :Integer
Equivalent to thisInteger.run(string, 10).
run/2
run(string :String, base :(0..36)) :Integer
Convert string to an integer. If it does not match the following syntax then an exception is thrown. XXX If sealed throw is accepted, then there must be a way to supply an ejector to handle failure here.
string must contain only an optional leading minus sign "-" (U+002D), followed by at least one digit of the specified base ("0"-"9" for bases up to 10, then "a"-"z" or "A"-"Z" for additional digits up to base 36).
Tests
Many E implementations have multiple representations of Integers for different size ranges. These implementations must be indistinguishable, or there must be exactly one representation for any given integer.
? def a := 4 # value: 4 ? def b := (400000000000000000000 // 100000000000000000000) # value: 4 ? a == b # value: true ? a.__getAllegedType() # value: int ? b.__getAllegedType() # value: int ? 400000000000000000000.__getAllegedType() # value: int
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