CODEWITHSUNDEEP
stringmethodssubstringsmalltalkpharo
TIKINNI
TIKINNI

Reputation: 33

Extract substring using index in Pharo Smalltalk

I'm trying to get a substring from an initial string in Smalltalk. I'm wondering if there's a way to do it. For example in Java, the method aStringObject.substring(index), allows you to trim a String object using an index (or its position in the array). I've been looking in the browser for something that works in a similar way, but couldn't find it. So far every trimming method uses a character or string to do the separation.

As an example of what I'm looking for:

initialString:='Hello'.
finalString:=initialString substring: 1

The value of finalString should be 'ello'.

Upvotes: 3

Views: 635

Answers (1)

Carlo
Carlo

Reputation: 176

In Smalltalk a String is a type of SequencableCollection so you can use the copying protocol messages as well.

For example you could use:

  • copyFrom: start to: stop
  • allButFirst (will not copy the first character)
  • allButFirst: n (more generally answer a copy of the receiver containing all but the first n elements.

Upvotes: 7

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