| Execute statements conditionally. |
| 'If' is a standard programming command and is widely mis-used by programmers. There are two basic forms of the IF statement in Userbase; the single line statement and the block if statement. The block if statement may have the sub-condition Else. |
| Formats: |
 IF condition [THEN] statement |
|
| IF condition [THEN] |
| statement... |
| statement... |
| END_IF |
|
| IF condition [THEN] |
| statement... |
| statement... |
| ELSE statement... |
|
| IF condition [THEN] |
| statement... |
| statement... |
| ELSE |
| statement... |
| statement... |
| END_IF |
|
| Notice that THEN is surrounded by '[' and ']'. This means that the THEN may be included but it is not absolutely necessary. It just makes it easier for anyone reading the code. |
| condition | Conditional expression. |
| The conditional expression can be any IDML expression, numeric or string. Zero or a null string is FALSE; anything else is TRUE. |
| condition | Any DML statement, including another IF statement. You may nest multi-line IF statements. |
| Conditional expression. |