New number and Math features in ES6That means that octal numbers are a compact representation of all permissions, you only need 3 digits, one digit per category of users. Two examples: 755 = 111,101,101: I can change, read and execute; everyone else can only read and execute. 640 = 110,100,000: I can read and write; group members can read; everyone can’t access at all. parseInt() and the new integer literals  # parseInt() has the f
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