concat

Concatenate strings.

Description

Concatenate strings.
list of string can be passed.

Parameters

Parameter	Type	Required	Default	Comment
first	str\|list[str]	Yes	-	string or list of strings to be concatnate before second parameter
out_bb	bool	No	False	If this parameter is set to True, the data is stored in the blackboard rather than in the flowdata. By default, the key in the blackboard is set to the node name. To customize the key, specify the out_field parameter.
out_field	str	No	None	The key for the data in the blackboard. If out_bb is set to False, this parameter is ignored.
second	str\|list[str]	Yes	-	string or list of strings to be concatnate after first parameter

Examples

# Concatenate the 2 strings.
# Output: {'concat': 'head1:pv1'}
- concat:
    name: "concat"
    first: "head1:"
    second: "pv1"

# Concatenate the 1 string and 1 list of string.
# Output: {'concat': ['head1:pv1', 'head1:pv2']}
- concat:
    name: "concat"
    first: "head1:"
    second: ["pv1", "pv2"]

# Concatenate the 2 list of string.
# Output: {'concat': ['head1:pv1', 'head2:pv2']}
- concat:
    name: "concat"
    first: ["head1:", "head2:"]
    second: ["pv1", "pv2"]

# Concatenate the 2 list of string, but length is different.
# Output: {'concat': ['head1:pv1', 'head2:pv2']}
- concat:
    name: "concat"
    first: ["head1:", "head2:", "head3:"]
    second: ["pv1", "pv2"]

# Concatenate the 2 strings and output to the blackboard.
# Output: {'foo': 'head1:pv1'}
- concat:
    name: "concat"
    first: "head1:"
    second: "pv1"
    out_bb: yes
    out_field: "foo"