For
Go has only one looping construct, the for
loop.
The basic for
loop has three components separated by semicolons:
- the init statement: executed before the first iteration
- the condition expression: evaluated before every iteration
- the post statement: executed at the end of every iteration
The init statement will often be a short variable declaration, and the
variables declared there are visible only in the scope of the for
statement.
The loop will stop iterating once the boolean condition evaluates to false
.
Note: Unlike other languages like C, Java, or JavaScript there are no parentheses
surrounding the three components of the for
statement and the braces { }
are
always required.