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Testing which is faster in various situations: Boolean(expr)

or

!! expr

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Boolean(window)

Boolean(true)

Boolean(1)

function sup(){
 return true;
}
Boolean(sup())

!! window

!! true

!! 1

function sup(){
 return true;
}
!! sup()

!!(window)

!!(1)

!!(true)

function sup(){
 return true;
}
!!(sup())

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