why is the notation for list and array indexing different?
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why is the notation for list and array indexing different?
by terrence.brannon
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What motivated distinct notation for list indexing (MyList !! i) versus array indexing (MArray.[2] )? You would think that it would simply be overloaded. -- Terrence Brannon - SID W049945 1111 Polaris Pkwy, OH1-1141, Columbus, OH 43240 818-359-0893 (cell) 614-213-3426 (fax) This communication is for informational purposes only. It is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction. All market prices, data and other information are not warranted as to completeness or accuracy and are subject to change without notice. Any comments or statements made herein do not necessarily reflect those of JPMorgan Chase & Co., its subsidiaries and affiliates. This transmission may contain information that is privileged, confidential, legally privileged, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. Although this transmission and any attachments are believed to be free of any virus or other defect that might affect any computer system into which it is received and opened, it is the responsibility of the recipient to ensure that it is virus free and no responsibility is accepted by JPMorgan Chase & Co., its subsidiaries and affiliates, as applicable, for any loss or damage arising in any way from its use. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. Please refer to http://www.jpmorgan.com/pages/disclosures for disclosures relating to UK legal entities. _______________________________________________ clean-list mailing list clean-list@... http://mailman.science.ru.nl/mailman/listinfo/clean-list |
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Re: why is the notation for list and array indexing different?
by terrence.brannon
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Of course, the same question applies to why drawing from a List uses <- but drawing from an Array uses <-: It does not seem necessary to have syntactic distnction. -- Terrence Brannon - SID W049945 1111 Polaris Pkwy, OH1-1141, Columbus, OH 43240 818-359-0893 (cell) 614-213-3426 (fax)
What motivated distinct notation for list indexing (MyList !! i) versus array indexing (MArray.[2] )? You would think that it would simply be overloaded. -- Terrence Brannon - SID W049945 1111 Polaris Pkwy, OH1-1141, Columbus, OH 43240 818-359-0893 (cell) 614-213-3426 (fax)
This communication is for informational purposes only.
It is not intended as an offer or solicitation for the purchase or sale
of any financial instrument or as an official confirmation of any transaction.
All market prices, data and other information are not warranted as to completeness
or accuracy and are subject to change without notice. Any comments or statements
made herein do not necessarily reflect those of JPMorgan Chase & Co.,
its subsidiaries and affiliates. This transmission may contain information
that is privileged, confidential, legally privileged, and/or exempt from
disclosure under applicable law. If you are not the intended recipient,
you are hereby notified that any disclosure, copying, distribution, or
use of the information contained herein (including any reliance thereon)
is STRICTLY PROHIBITED. Although this transmission and any attachments
are believed to be free of any virus or other defect that might affect
any computer system into which it is received and opened, it is the responsibility
of the recipient to ensure that it is virus free and no responsibility
is accepted by JPMorgan Chase & Co., its subsidiaries and affiliates,
as applicable, for any loss or damage arising in any way from its use.
If you received this transmission in error, please immediately contact
the sender and destroy the material in its entirety, whether in electronic
or hard copy format. Thank you. Please refer to http://www.jpmorgan.com/pages/disclosures
for disclosures relating to UK legal entities. _______________________________________________
This communication is for informational purposes only. It is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction. All market prices, data and other information are not warranted as to completeness or accuracy and are subject to change without notice. Any comments or statements made herein do not necessarily reflect those of JPMorgan Chase & Co., its subsidiaries and affiliates. This transmission may contain information that is privileged, confidential, legally privileged, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. Although this transmission and any attachments are believed to be free of any virus or other defect that might affect any computer system into which it is received and opened, it is the responsibility of the recipient to ensure that it is virus free and no responsibility is accepted by JPMorgan Chase & Co., its subsidiaries and affiliates, as applicable, for any loss or damage arising in any way from its use. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. Please refer to http://www.jpmorgan.com/pages/disclosures for disclosures relating to UK legal entities. _______________________________________________ clean-list mailing list clean-list@... http://mailman.science.ru.nl/mailman/listinfo/clean-list |
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List index notation used on unboxed arrays in Language Report?
by terrence.brannon
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On p.24 of Language Report we see this: StripNewline string | string !! last<>’\n’ = string but !! is used to index lists and a String is an unboxed array. -- Terrence Brannon - SID W049945 1111 Polaris Pkwy, OH1-1141, Columbus, OH 43240 818-359-0893 (cell) 614-213-3426 (fax) This communication is for informational purposes only. It is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction. All market prices, data and other information are not warranted as to completeness or accuracy and are subject to change without notice. Any comments or statements made herein do not necessarily reflect those of JPMorgan Chase & Co., its subsidiaries and affiliates. This transmission may contain information that is privileged, confidential, legally privileged, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. Although this transmission and any attachments are believed to be free of any virus or other defect that might affect any computer system into which it is received and opened, it is the responsibility of the recipient to ensure that it is virus free and no responsibility is accepted by JPMorgan Chase & Co., its subsidiaries and affiliates, as applicable, for any loss or damage arising in any way from its use. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. Please refer to http://www.jpmorgan.com/pages/disclosures for disclosures relating to UK legal entities. _______________________________________________ clean-list mailing list clean-list@... http://mailman.science.ru.nl/mailman/listinfo/clean-list |
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Re: why is the notation for list and array indexing different?
by Pieter Koopman
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Hi Terrence,
terrence.x.brannon@... wrote: > > What motivated distinct notation for list indexing (MyList !! i) > versus array indexing (MArray.[2] )? An Array is an instance of a 2 parameter class (class Array .a e where ..) while lists are a plain polymorphic data type. I think we cannot convince the type checker that it is a good idea to use the same operator in both situation. Best, Pieter Koopman > You would think that it would simply be overloaded. > > -- > Terrence Brannon - SID W049945 > 1111 Polaris Pkwy, OH1-1141, Columbus, OH 43240 > 818-359-0893 (cell) > 614-213-3426 (fax) _______________________________________________ clean-list mailing list clean-list@... http://mailman.science.ru.nl/mailman/listinfo/clean-list |
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Re: List index notation used on unboxed arrays in Language Report?
by Pieter Koopman
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Hi,
terrence.x.brannon@... wrote: > > On p.24 of Language Report we see this: > > > StripNewline string > | string !! last<>’\n’ = string > > but !! is used to index lists and a String is an unboxed array. That is correct. You spotted an error. We will update this. Best, Pieter Koopman > -- > Terrence Brannon - SID W049945 > 1111 Polaris Pkwy, OH1-1141, Columbus, OH 43240 > 818-359-0893 (cell) > 614-213-3426 (fax) > > > > ------------------------------------------------------------------------ > > This communication is for informational purposes only. It is not > intended as an offer or solicitation for the purchase or sale of any > financial instrument or as an official confirmation of any > transaction. All market prices, data and other information are not > warranted as to completeness or accuracy and are subject to change > without notice. Any comments or statements made herein do not > necessarily reflect those of JPMorgan Chase & Co., its subsidiaries > and affiliates. This transmission may contain information that is > privileged, confidential, legally privileged, and/or exempt from > disclosure under applicable law. If you are not the intended > recipient, you are hereby notified that any disclosure, copying, > distribution, or use of the information contained herein (including > any reliance thereon) is STRICTLY PROHIBITED. Although this > transmission and any attachments are believed to be free of any virus > or other defect that might affect any computer system into which it is > received and opened, it is the responsibility of the recipient to > ensure that it is virus free and no responsibility is accepted by > JPMorgan Chase & Co., its subsidiaries and affiliates, as applicable, > for any loss or damage arising in any way from its use. If you > received this transmission in error, please immediately contact the > sender and destroy the material in its entirety, whether in electronic > or hard copy format. Thank you. Please refer to > http://www.jpmorgan.com/pages/disclosures for disclosures relating to > UK legal entities. > > ------------------------------------------------------------------------ > > _______________________________________________ > clean-list mailing list > clean-list@... > http://mailman.science.ru.nl/mailman/listinfo/clean-list > clean-list mailing list clean-list@... http://mailman.science.ru.nl/mailman/listinfo/clean-list |
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