Subject: [jira] Commented: (BOO-830) Substraction operator for arrays (+ bug on addition operator?) - msg#00066

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[jira] Commented: (BOO-830) Substraction operator for arrays (+ bug on addition operator?)

[ http://jira.codehaus.org/browse/BOO-830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_96514 ] Rodrigo B. de Oliveira commented on BOO-830: -------------------------------------------- Oddly enough that's the right behavior. You can Add anything IEnumerable to a List in which case all the elements are added. string enumerates over its characters. > Substraction operator for arrays (+ bug on addition operator?) > -------------------------------------------------------------- > > Key: BOO-830 > URL: http://jira.codehaus.org/browse/BOO-830 > Project: Boo > Issue Type: New Feature > Components: Compiler, Runtime (Boo.Lang) > Reporter: Cedric Vivier > Priority: Minor > Fix For: 0.8 > > > Adding the substraction operator on boo arrays would be a nice handy feature : > >>>cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney'] > >>>visited = cities - ['Moscow', 'Sidney'] > Would give: > ['Tokyo', 'Barcelona', 'Kuala Lumpur'] > Also there is surely a bug with array's '+ operator' : > >>> cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur'] > >>>cities += 'London' > Gives: > ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', L, o, n, d, o, n] > Hardly the expected and preferable behavior I think? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.codehaus.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe from this list please visit: http://xircles.codehaus.org/manage_email

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[jira] Commented: (BOO-830) Substraction operator for arrays (+ bug on addition operator?)

[ http://jira.codehaus.org/browse/BOO-830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_96520 ] Avishay Lavie commented on BOO-830: ----------------------------------- I agree - this behavior is highly unintuitive. Technically it's rather hard to circumvent (perhaps just hard-coding a special case for strings?) but that doesn't make it less of a (bad) surprise. A different option would be to separate the add-single-item and the concatenate-with-other-list behavior. Consider, for example, reserving "+" for "add this item" and "&" for "concatenate with items in this enumerable". {code} cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney'] cities += 'London' >>> ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney', 'London'] cities &= 'London' >>> ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney', 'London', L, o, >>> n, d, o ,n] {code} > Substraction operator for arrays (+ bug on addition operator?) > -------------------------------------------------------------- > > Key: BOO-830 > URL: http://jira.codehaus.org/browse/BOO-830 > Project: Boo > Issue Type: New Feature > Components: Compiler, Runtime (Boo.Lang) > Reporter: Cedric Vivier > Priority: Minor > Fix For: 0.8 > > > Adding the substraction operator on boo arrays would be a nice handy feature : > >>>cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney'] > >>>visited = cities - ['Moscow', 'Sidney'] > Would give: > ['Tokyo', 'Barcelona', 'Kuala Lumpur'] > Also there is surely a bug with array's '+ operator' : > >>> cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur'] > >>>cities += 'London' > Gives: > ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', L, o, n, d, o, n] > Hardly the expected and preferable behavior I think? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.codehaus.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe from this list please visit: http://xircles.codehaus.org/manage_email

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[jira] Commented: (BOO-830) Substraction operator for arrays (+ bug on addition operator?)

[ http://jira.codehaus.org/browse/BOO-830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_96514 ] Rodrigo B. de Oliveira commented on BOO-830: -------------------------------------------- Oddly enough that's the right behavior. You can Add anything IEnumerable to a List in which case all the elements are added. string enumerates over its characters. > Substraction operator for arrays (+ bug on addition operator?) > -------------------------------------------------------------- > > Key: BOO-830 > URL: http://jira.codehaus.org/browse/BOO-830 > Project: Boo > Issue Type: New Feature > Components: Compiler, Runtime (Boo.Lang) > Reporter: Cedric Vivier > Priority: Minor > Fix For: 0.8 > > > Adding the substraction operator on boo arrays would be a nice handy feature : > >>>cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney'] > >>>visited = cities - ['Moscow', 'Sidney'] > Would give: > ['Tokyo', 'Barcelona', 'Kuala Lumpur'] > Also there is surely a bug with array's '+ operator' : > >>> cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur'] > >>>cities += 'London' > Gives: > ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', L, o, n, d, o, n] > Hardly the expected and preferable behavior I think? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.codehaus.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe from this list please visit: http://xircles.codehaus.org/manage_email

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[jira] Commented: (BOO-830) Substraction operator for arrays (+ bug on addition operator?)

[ http://jira.codehaus.org/browse/BOO-830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_96520 ] Avishay Lavie commented on BOO-830: ----------------------------------- I agree - this behavior is highly unintuitive. Technically it's rather hard to circumvent (perhaps just hard-coding a special case for strings?) but that doesn't make it less of a (bad) surprise. A different option would be to separate the add-single-item and the concatenate-with-other-list behavior. Consider, for example, reserving "+" for "add this item" and "&" for "concatenate with items in this enumerable". {code} cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney'] cities += 'London' >>> ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney', 'London'] cities &= 'London' >>> ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney', 'London', L, o, >>> n, d, o ,n] {code} > Substraction operator for arrays (+ bug on addition operator?) > -------------------------------------------------------------- > > Key: BOO-830 > URL: http://jira.codehaus.org/browse/BOO-830 > Project: Boo > Issue Type: New Feature > Components: Compiler, Runtime (Boo.Lang) > Reporter: Cedric Vivier > Priority: Minor > Fix For: 0.8 > > > Adding the substraction operator on boo arrays would be a nice handy feature : > >>>cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', 'Sidney'] > >>>visited = cities - ['Moscow', 'Sidney'] > Would give: > ['Tokyo', 'Barcelona', 'Kuala Lumpur'] > Also there is surely a bug with array's '+ operator' : > >>> cities = ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur'] > >>>cities += 'London' > Gives: > ['Tokyo', 'Barcelona', 'Moscow', 'Kuala Lumpur', L, o, n, d, o, n] > Hardly the expected and preferable behavior I think? -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.codehaus.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe from this list please visit: http://xircles.codehaus.org/manage_email