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'use strict' ;
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- let tea = true ;
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- let juice = true ;
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+ const tea = true ;
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+ const juice = true ;
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- let vodka = false ;
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- let beer = false ;
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+ const vodka = false ;
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+ const beer = false ;
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- let goodDrinks = tea && juice ; // true
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- let badDrinks = vodka && beer ; // false
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- let badMix = vodka && juice ; // false
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+ const goodDrinks = tea && juice ; // true
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+ const badDrinks = vodka && beer ; // false
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+ const badMix = vodka && juice ; // false
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console . log ( '...Logical operator AND (&&)...' ) ;
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console . log ( 'Mix of Tea AND Juice is ' + goodDrinks ) ;
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console . log ( 'Mix of Vodka AND Beer is ' + badDrinks ) ;
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console . log ( 'Mix of Vodka AND Juice is ' + badMix ) ;
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- let engine_1 = true ;
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- let engine_2 = false ;
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+ const engine1 = true ;
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+ const engine2 = false ;
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- let fly = engine_1 || engine_2 ; // true, because the plane needs at least one OK engine
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+ const fly = engine1 || engine2 ; // true, because the plane needs at least one OK engine
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console . log ( '...Logical operator OR (||)...' ) ;
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- console . log ( 'The first engine works? - ' + engine_1 ) ;
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- console . log ( 'The second engine works? - ' + engine_2 ) ;
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- console . log ( 'Is the plane still flying? - ' + fly ) ;
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+ console . log ( 'The first engine works? - ' + engine1 ) ;
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+ console . log ( 'The second engine works? - ' + engine2 ) ;
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+ console . log ( 'Is the plane still flying? - ' + fly ) ;
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- let happy = true ;
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+ const happy = true ;
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- let mood = ! happy ; // false
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+ const mood = ! happy ; // false
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console . log ( '...Logical operator NOT (!)...' ) ;
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- console . log ( 'He is happy? - ' + mood ) ;
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+ console . log ( 'Is he happy? - ' + mood ) ;
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