Delete all objects on the stack
The CLEAR command deletes all the objects on the stack. The contents can be recovered pressing immediately after the LF key.
When in RPN mode CLEAR fills all the levels with the value stored in the top-most level of the stack.
CLEAR is not fully equivalent to its userRPL counterpart.
In particular:
Input
4: 1_m
3: { 'X' 'Y' 'Z' }
2: "This is a string"
1: 123
…………………………………………………………………………………………………………
CLEAR
Output
4:
3:
2:
1:
…………………………………………………………………………………………………………
| Command | Short Description | |
|---|---|---|
| CLEAR | Remove all objects from the stack | |
| DEPTH | Get the current stack depth | |
| DROP | Remove an object from the stack | |
| DROP2 | Remove two objects form the stack | |
| DROPN | Remove N objects from the stack | |
| DUP | Duplicate an object on the stack | |
| DUP2 | Duplicate two objects on the stack | |
| DUPDUP | Duplicate the same object twice on the stack | |
| DUPN | Duplicate a group of N objects | |
| NDUPN | Replicate one object N times and return N | |
| NIP | Remove object at level 2 on the stack | |
| OVER | Duplicate object at level 2 on the stack | |
| PICK | Duplicate object at position N on the stack | |
| PICK3 | Duplicate object at level 3 on the stack | |
| ROLL | Move object at level N to level 1 | |
| ROLLD | Move object from level 1 to level N | |
| ROT | Move object from level 3 to level 1 | |
| SWAP | Exchange objects in levels 1 and 2 | |
| UNPICK | Move object from level 1 to level N. | |
| UNROT | Move object from level 1 to level 3 | |
| IFT | Evaluate objects on the stack conditionally | |
| IFTE | Evaluate objects on the stack conditionally | |
| STKPUSH | Push a snapshot of the current stack on the undo stack | NEW |
| STKPOP | Pop a stack snapshot from the undo stack | NEW |
| STKDROP | Drop a snapshot from the undo stack | NEW |
| STKPICK | Copy snapshot in level N to the current stack | NEW |
| STKDEPTH | Get the depth of the undo stack | NEW |