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Bug with string methods? [message #89846]

Wed, 10 December 2014 14:31

penteado
Messages: 866
Registered: February 2018

Senior Member
Administrator

Am I misunderstanding the documentation, or is there a bug with some string methods?

When a string has more than one character, substring() works as I expected, from the documentation:

IDL> str='ab'
IDL> print,str.substring(-1)
b

But if the string has length 1, I get an empty string:

IDL> str='a'
IDL> print,str.substring(-1)

IDL> print,strlen(str.substring(-1))
0
IDL>

A similar problem happens with remove():

IDL> str='ab'
IDL> print,str.remove(-1)
a
IDL> str='a'
IDL> print,str.remove(-1)
a

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[Message index]

		Bug with string methods? By: penteado on Wed, 10 December 2014 14:31
		Re: Bug with string methods? By: chris_torrence@NOSPAM on Wed, 10 December 2014 16:02

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