isnumber ( ';' STRING )*

Summary

The isnumber macro checks if all provided arguments are valid numeric values. Returns true only if all arguments are numbers, false otherwise.

Syntax

${isnumber;<string>[;<string>...]}

Parameters

• string - One or more strings to check (minimum 1 required)

Behavior

• Returns true if all arguments are valid numbers
• Returns false if any argument is not numeric
• Accepts integers and decimals
• Scientific notation supported
• Requires at least one argument

Examples

Check if numeric:

${if;${isnumber;${value}};is-numeric;not-numeric}

Validate multiple values:

${isnumber;123;45.6;-78}
# Returns: true

Not a number:

${isnumber;abc}
# Returns: false

Mixed values:

${isnumber;123;abc}
# Returns: false (all must be numeric)

Use Cases

• Input validation
• Type checking
• Numeric validation before operations
• Configuration validation
• Data type verification

Notes

• All arguments must be numeric for true
• Supports integers, decimals, negative
• Scientific notation accepted
• Requires at least one argument
• Returns boolean
• See also: ${matches} for pattern matching

See test cases in MacroTestsForDocsExamples.java