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transcendent value undef

IsaacShelton edited this page Mar 21, 2022 · 1 revision

undef (transcendent value)

undef is the value of transcendent variables that haven't been assigned a value

#print non_existent_transcendent_variable
undef

Difference from 'null'

undef should NOT be assigned to transcendent variables by the programmer, instead null should be used

#set has_feature undef // BAD
#set has_feature null // GOOD
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