$isInteger

The function $isInteger[value] checks if a value is an integer (without decimals). It accepts positive integers, negative integers and zero.

Syntax

$isInteger[value]

Parameters

Parameter	Description
value	The value to test.

Return Value

• Type: Boolean
• true if value is an integer (e.g. 42, -7, 0)
• false if value is a decimal, text, or empty.

Behavior

• Decimal numbers (3.14, 2.0) return false.
• Integers in scientific notation are not recognized.
• 0 is a valid integer.
• Spaces around the number can invalidate the test.

Examples

Parameter Validation

$if[$isInteger[$message[1]]==true]
  $sendMessage[✅ $message[1] is a valid integer.]
$else
  $sendMessage[❌ Please provide an integer.]
$endif

Pagination (Validation)

$var[page;$message[1]]
$if[$isInteger[$var[page]]==true]
  $if[$var[page]>=1]
    $sendMessage[📄 Displaying page $var[page]...]
  $else
    $sendMessage[❌ Page must be >= 1.]
  $endif
$else
  $sendMessage[❌ Invalid parameter. Usage: !page <number>]
$endif

Custom Counter

$var[number;$message[1]]
$if[$isInteger[$var[number]]==true]
  $for[i;1;$var[number];1]
    Counter: $for[i]
  $endfor
$else
  $sendMessage[Please enter an integer.]
$endif

Notes

• $isInteger[42] returns true.
• $isInteger[-10] returns true.
• $isInteger[3.14] returns false.
• $isInteger[abc] returns false.
• To also accept decimals, use $isNumber[].