9.6.4.4 Assignment ( << >> )

Assignment is performed using the assignment operators. Left assignment x << 5 and right assignment 5 >> x. These operators are equivalent. Assignment of a value to a variable defines the variable type. Once a variable is 'typed' it cannot be assigned another type. Note there is no scope, all variables are at the 'top level.'

Assignment Sugar ( <<+ +>> etc... )

Note: left and right assignment do not necessarily yield the same results.

• Add Assign ( <<+, +>> ) - left assignment is x <<+ 5 is x << x + 5 whereas right assignment is 5 +>> x is 5 + x >> x.
• Subtract Assign ( <<-, ->> ) - left assignment is x <<- 5 is x << x - 5 whereas right assignment is 5 ->> x is 5 - x >> x. Left and right assignment are not the same here.
• Multiply Assign ( <<*, *>> ) - left assignment is x <<* 5 is x << x * 5 whereas right assignment is 5 *>> x is 5 * x >> x.
• Divide Assign ( <</, />> ) - left assignment is x <</ 5 is x << x / 5 whereas right assignment is 5 />> x is 5 / x >> x. Left and right assignment are not the same here.
• Remainder Assign ( <<%, %>> ) - left assignment is x <<% 5 is x << x % 5 whereas right assignment is 5 %>> x is 5 % x >> x. Left and right assignment are not the same here.