For Loops

Apex supports three variations of the for loop:

The traditional for loop, where init_stmt, exit_condition, increment_stmt, and code_block are placeholder values:
```
for (init_stmt; exit_condition; increment_stmt) {
    code_block
}
```
The list or set iteration for loop, where variable must be of the same primitive or sObject type as list_or_set.
```
for (variable : list_or_set) {
    code_block
}
```
The SOQL for loop:
```
for (variable : [soql_query]) {
    code_block
}
```
or
```
for (variable_list : [soql_query]) {
    code_block
}
```
Both variable and variable_list must be of the same sObject type as is returned by the soql_query.

Note

Note

Curly braces ({}) are required around a code_block only if the block contains more than one statement.

Each is discussed further in the sections that follow.