Get
Fetches the value of a retriever. If the resulting value is an int, it's result can be manipulated with int
operations. For example, get(Struct1.sub_struct1, SubStruct1.sub_list1, 1, SubStruct2.property)+1 is like doing
struct1.sub_struct1.sub_list1[1].property+1
Parameters:
-
*source(Retriever | int, default:()) –The retriever path to fetch the value from. This can be a sequence of retrievers/list indices starting in the current struct
Returns:
-
Get–An instance encoding the retriever path and manipulations to perform during parsing
Raises:
-
ValueError–If the value at the source path is not an
int, andintoperations are attempted
Fetches the length of a list-valued retriever. It's result can be manipulated with operations. For example,
get_len(Struct1.sub_struct1, SubStruct1.sub_list1)-1 is like doing len(struct1.sub_struct1.sub_list1)-1
Parameters:
-
*source(Retriever | int, default:()) –The retriever path to fetch the value from. This can be a sequence of retrievers/list indices starting in the current struct
Returns:
-
Get–An instance encoding the retriever path and manipulations to perform during parsing
Raises:
-
ValueError–If the value at the source path is not a list
get_key(key: str) -> Get
Fetches the value of a context key. If the resulting value is an int, it's result can be manipulated with int
operations. For example, get_key("some_prop")+1 is like doing ctx["some_prop"]+1
Parameters:
-
key(str) –The context key to get
Returns:
-
Get–An instance encoding the retriever path and manipulations to perform during parsing
Raises:
-
ValueError–If the value at the source path is not an
int, andintoperations are attempted
Encodes and performs manipulations on retriever values before passing them to combinators as inputs. For example, it can be used to add the value of two retrievers.