rtecall("isnumeric") function

A RAD function that verifies that a string contains only numeric characters, or only numeric characters and the provided non-numeric characters.

Search for	Example	Results
A single word	`cat`	Topics that contain the word "cat". You will also find its grammatical variations, such as "cats".
A phrase. You can specify that the search results contain a specific phrase.	`"cat food"` (quotation marks)	Topics that contain the literal phrase "cat food" and all its grammatical variations. Without the quotation marks, the query is equivalent to specifying an OR operator, which finds topics with one of the individual words instead of the phrase.

Search for	Operator	Example
Two or more words in the same topic	`AND` `and` `+` (plus symbol) `&` (ampersand)	`cat AND dog` `"cat food"+milk` `"cat food"&"dog food"`
Either word in a topic	`OR` `or` `\|` (pipe)	`cat OR dog` `cat \| dog`
Topics that do not contain a specific word or phrase	`NOT` `not` `!` (exclamation point)	`NOT cat` `! dog`
Topics that contain one string and do not contain another	`^` (caret)	`cat ^ mouse`
A combination of search types	`( )` parentheses	`cat + (dog \| mouse)` `cat \| dog + (! mouse)`

Function

rtecall("isnumeric")

Format

$L.success.flag= rtecall ($L.fnc.name, $L.return.code, $L.str, $L.chars)

Parameters

The following parameters are valid for the rtecall("isnumeric") function:

Parameter	Data type	Description
$L.success.flg	Logical	Indicates if the function was successful.
$L.fnc.name	String	Name of the sub-function to call, in this case "isnumeric".
$L.return.code	Number	Provides a more detailed return code.
$L.str	String	The string to be checked.
$L.chars	String	An optional comma-delimited string of non-numeric characters to allow.

Parameter

Data type

Description

$L.success.flg

Logical

Indicates if the function was successful.

$L.fnc.name

String

Name of the sub-function to call, in this case "isnumeric".

$L.return.code

Number

Provides a more detailed return code.

$L.str

String

The string to be checked.

$L.chars

String

An optional comma-delimited string of non-numeric characters to allow.

Factors

If the $L.success.flg is false, the function failed. If it is true, the function succeeded.

Example

$L.success.flag=true $L.return.code=0 $L.str=name in $L.file $L.chars="-,+,*,/,%,$" $L.success.flag=rtecall("isnumeric", $L.return.code, $L.str, $L.chars)

Results:

When name in $L.file="B1B", $L.success.flag is false.

When name in $L.file="Bob", $L.success.flag is false.

When name in $L.file="36", $L.success.flag is true.