• ← PreDecrement
• → SubtractFrom

PreIncrement (++)

WMA link

PreIncrement[x]

++x

increments x by 1, returning the new value of x.

++a is equivalent to a = a + 1:

• • a = 2

• • ++a

• • a

PreIncrement a numeric value:

• • a + 1.6

PreIncrement a symbolic value:

• • y = x; ++y

• • y

Compare with Increment which returns the updated value, and PreDecrement which goes the other way.