{ "BLMOVE": { "summary": "Pops an element from a list, pushes it to another list and returns it. Blocks until an element is available otherwise. Deletes the list if the last element was moved.", "complexity": "O(1)", "group": "list", "since": "6.2.0", "arity": 6, "function": "blmoveCommand", "command_flags": [ "WRITE", "DENYOOM", "BLOCKING" ], "acl_categories": [ "LIST" ], "key_specs": [ { "flags": [ "RW", "ACCESS", "DELETE" ], "begin_search": { "index": { "pos": 1 } }, "find_keys": { "range": { "lastkey": 0, "step": 1, "limit": 0 } } }, { "flags": [ "RW", "INSERT" ], "begin_search": { "index": { "pos": 2 } }, "find_keys": { "range": { "lastkey": 0, "step": 1, "limit": 0 } } } ], "reply_schema": { "oneOf": [ { "description": "The popped element.", "type": "string" }, { "description": "Operation timed-out", "type": "null" } ] }, "arguments": [ { "name": "source", "type": "key", "key_spec_index": 0 }, { "name": "destination", "type": "key", "key_spec_index": 1 }, { "name": "wherefrom", "type": "oneof", "arguments": [ { "name": "left", "type": "pure-token", "token": "LEFT" }, { "name": "right", "type": "pure-token", "token": "RIGHT" } ] }, { "name": "whereto", "type": "oneof", "arguments": [ { "name": "left", "type": "pure-token", "token": "LEFT" }, { "name": "right", "type": "pure-token", "token": "RIGHT" } ] }, { "name": "timeout", "type": "double" } ] } }