Operations (Strings)

Strings

String Operations: Concatenate

Using CUE references on non-constant values in arithmetic and string operations will result in unexpected results since the process generates a new value for each iteration based on the field type

If a single term in an operation with references is a value reference, then all other terms will be treated as a value reference (require a full path name)

Operators

operator	description	example
+	Concatenate	"hello" + " " + "world"

Usage

result_field_name: field_name + const + spec_field_name.eval

Notes:

field_name represents a previously declared constant field of type string.
const represents a string or number constant such as "hello" or 1.
Reference spec_field_name.eval returns a result of type string or number.
Order matters when referencing fields. A string operation must come after all the specifications it references.

References

String operations require a working knowledge of references. For more on how references work see the References Section.

When using value references (eval) you can concatenate strings and numbers. However, this is not allowed in CUE references.

Examples

String Concatenation Specs and Constants


salutation_word: #SpecProbability & { // spec
	 values: ["Hello", "Goodbye"]
	 probabilities: [50, 50]
}
name: #SpecFakeType & { // spec
  fakename: "name"
}
expression: "!" // const
salutation: salutation_word.eval + " " + name.eval + expression

CSV Example

salutation_word	name	expression	salutation
Hello	Moe Gader	!	Hello Moe Gader!
Hello	Arla Brown	!	Hello Arla Brown!
Goodbye	Jaylen Wisoky	!	Goodbye Jaylen Wisoky!
Goodbye	May Basan	!	Goodbye May Basan!

JSON Example Output

[
    {
      salutation_word: "Hello",
      name: "Moe Gader",
      expression: "!",
      salutation: "Hello Moe Gader!",
    },
    {
      salutation_word: "Hello",
      name: "Arla Brown",
      expression: "!",
      salutation: "Hello Arla Brown!",
    },
    {
      salutation_word: "Goodbye",
      name: "Jaylen Wisoky",
      expression: "!",
      salutation: "Goodbye Jaylen Wisoky!",
    },
    {
      salutation_word: "Goodbye",
      name: "May Basan",
      expression: "!",
      salutation: "Goodbye May Basan!",
    },
]