Loss per share (Tables)

12 Months Ended

Oct. 31, 2021

Earnings per share [abstract]

Summary of earnings per share

	Year Ended October 31,
	2021		2020		2019
Net loss	$	(226,559,288)	$	(9,275,962)	$	(4,100,782)
Weighted average number of ordinary shares	110,119,135		82,571,828		71,891,372
Basic and diluted loss per share	$	(2.06)	$	(0.11)	$	(0.06)

The following potential common shares are anti-dilutive and are therefore excluded from the weighted average number of common shares for the purpose of diluted earnings per share:

	Year Ended October 31,
	2021	2020	2019
Stock options	5,296,553	5,327,985	3,991,000
Warrants	22,999,894	—	—
Convertible debt	7,493,795	—	536,231
Restricted share units	716,763	87,084	—
	36,507,005	5,415,069	4,527,231