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Scala to Python Cheat Sheet (DRAFT) by

This is a draft cheat sheet. It is a work in progress and is not finished yet.

Variables

foo = 'Apples'
 
val foo = "­App­les­"
 
baz = foo + ' and oranges'
 
val baz = foo + ' and oranges'
 
baz = "Only Grapes­"
Vals are immutable in Scala. Create a var instead
 
one = 1
 
var one = 1
 
one += 1
 
one += 1
 
foo, bar = [1, 2, 3], [1,2,3]
 
val foo, bar = Array(1, 2, 3)
 
foo[0] = 4
#Changes only foo
 
bar(0) = 4
// changes only bar
 
foo.__­add­__(4)
 
foo.+(1)
 

Control Statements

foo = 1 if x > 0 else -1
 
val foo = if (x > 0) 1 else -1
 
if x == 0: 
   	   baz = 5
 
if (x == 0) { 
 baz = 5 
}
  
if (foo.i­sIn­sta­nce­Of[­Str­ing]) { 
    print(­"Foo is a string­!") 
 } else if (foo.i­sIn­sta­nce­Of[­Int]) { 
     print(­"Foo is an int!") 
 } else { 
     print(­"I dont know what foo is...")  
 }
 
while (n < 5) { nlist += n n += 1 }