# Convert Literal array into Dynamic array

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## Convert Literal array into Dynamic array

 HI, friends! Can anyone help me how to convert literal array: #(2 3 4) into the dynamic array: {2. 3. 4}? Thanks a lot, Khrystyna!
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## Re: Convert Literal array into Dynamic array

 > On 16 Apr 2017, at 16:37, chrismihaylyk <[hidden email]> wrote: > > HI, friends! > > Can anyone help me how to convert literal array: #(2 3 4) > into the dynamic array: {2. 3. 4}? this is not a dynamic array (that does not exist on Pharo). check, if you do: #(2 3 4) =  {2. 3. 4} ==> true and: #(2 3 4) class =  {2. 3. 4} class ==> true in fact, the only difference between them is that the first is literal (it will be as is in the compiled code) and the second is a runtime array (it will be evaluated on execution). Now, perhaps what you want is to transform an Array into a Collection that accepts additions (that would be a “dynamic” collection on Pharo).. For that you can do: a := #(2 3 4) asOrderedCollection. a add: 5. a ==> anOrderedCollection(2 3 4 5). (note that you could want a Set… or whatever… but the most common transformation is an array into an OrderedCollection (because it preserves order, etc.) cheers, Esteban > > Thanks a lot, Khrystyna! > > > > -- > View this message in context: http://forum.world.st/Convert-Literal-array-into-Dynamic-array-tp4942305.html> Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >
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## Re: Convert Literal array into Dynamic array

 Thank you very much!Now I understand.Actually, I need this interpretation {7. 8. "f"} for writing parser of javascript queries which is used in MongoDB shell, to be able to execute this with  MongoQuery Pharo class.Maybe, you could help me how to implement it?2017-04-16 18:19 GMT+03:00 Esteban Lorenzano : > On 16 Apr 2017, at 16:37, chrismihaylyk <[hidden email]> wrote: > > HI, friends! > > Can anyone help me how to convert literal array: #(2 3 4) > into the dynamic array: {2. 3. 4}? this is not a dynamic array (that does not exist on Pharo). check, if you do: #(2 3 4) =  {2. 3. 4} ==> true and: #(2 3 4) class =  {2. 3. 4} class ==> true in fact, the only difference between them is that the first is literal (it will be as is in the compiled code) and the second is a runtime array (it will be evaluated on execution). Now, perhaps what you want is to transform an Array into a Collection that accepts additions (that would be a “dynamic” collection on Pharo).. For that you can do: a := #(2 3 4) asOrderedCollection. a add: 5. a ==> anOrderedCollection(2 3 4 5). (note that you could want a Set… or whatever… but the most common transformation is an array into an OrderedCollection (because it preserves order, etc.) cheers, Esteban > > Thanks a lot, Khrystyna! > > > > -- > View this message in context: http://forum.world.st/Convert-Literal-array-into-Dynamic-array-tp4942305.html > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >