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#1 2010-09-12 13:44:10
- johnnydean1
- Scratcher
- Registered: 2010-02-12
- Posts: 1000+
Lists in Squeak
I know you can make lists like this:
aVariable := #(list items here)
But how do I remove certain ones, like
remove item 2 of list
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#3 2010-09-12 14:11:07
- johnnydean1
- Scratcher
- Registered: 2010-02-12
- Posts: 1000+
Re: Lists in Squeak
and how to add to the lists and call values?
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#5 2010-09-12 15:26:33
Re: Lists in Squeak
nXIII wrote:
Look, just open a browser and go to "Collections-Sequencable" -> "OrderedCollection" and look for yourself.
I have absolutely no clue what you mean by "call values"
i think jd1 means like
list at: 1
or
list first
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#6 2010-09-12 15:50:45
#7 2010-09-12 16:01:14
- johnnydean1
- Scratcher
- Registered: 2010-02-12
- Posts: 1000+
Re: Lists in Squeak
So im clear:
A ordered collection (list)
|oc|
oc := {'array'.'array'.'array'} as: OrderedCollection. "A OC"
oc removeAt: 2. "remove thing 2"
oc := #(symbol 'string' (array)) as: OrderedCollection. "What does this do?"
oc removeLast; removeFirst; removeAll. "removing things"
oc at: 1. "Item 1 of oc"
oc first. "The first record in oc"
How do I add a new entry?
oc add: 'string' "Is this how?"
oc add: 'string' after: 'string to find' "Is this how I add something after something else"
Am I correct?
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#8 2010-09-12 16:13:07
Re: Lists in Squeak
johnnydean1 wrote:
So im clear:
A ordered collection (list)
|oc|
oc := {'array'.'array'.'array'} as: OrderedCollection. "A OC"
oc removeAt: 2. "remove thing 2"
oc := #(symbol 'string' (array)) as: OrderedCollection. "What does this do?"
oc removeLast; removeFirst; removeAll. "removing things"
oc at: 1. "Item 1 of oc"
oc first. "The first record in oc"How do I add a new entry?
oc add: 'string' "Is this how?"
oc add: 'string' after: 'string to find' "Is this how I add something after something else"
Am I correct?
Yes. add: is equivalent to addLast: (add after the last index). There's also addFirst and add: afterIndex:
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