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Share capital and share-based compensation - Summary of RSU Activities (Details) - Restricted share units
12 Months Ended
Oct. 31, 2022
shares
$ / shares
Oct. 31, 2021
shares
$ / shares
Disclosure of classes of share capital [line items]    
Beginning balance (in shares) | shares 716,763 87,084
Granted (in shares) | shares 1,703,966 1,021,955
Number of other equity instruments exercised (in shares) | shares (317,619) (392,276)
Forfeited (in shares) | shares (55,073) 0
Ending balance (in shares) | shares 2,048,037 716,763
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]    
Weighted average share price, beginning balance (in dollars per share) | $ / shares $ 10.93 $ 1.07
Granted (in dollars per share) | $ / shares 8.38 8.29
Exercised (in dollars per share) | $ / shares 11.22 1.87
Forfeited (in dollars per share) | $ / shares 9.98 0
Weighted average share price, ending balance (in dollars per share) | $ / shares $ 8.79 $ 10.93