[ boolean ]
[Boolean] is a primitive built-in data type used to represent the value true or false. Literal true and false are produced with the words 'true' or 'false' (no quotes, not case-sensitive).
Calling the boolean() method with no parameters will return false. Calling the method with any other single parameter will return either true or false depending on the following:
The following values are considered to be false:
Every other value is considered true.
A value is implicitly converted to true or false when used as the single operand to the 'if' or 'while' constructs.
- Syntax
- Methods
- Traits
boolean('Value')
local(x = boolean('Value'))Examples
- Beginner
To explicitly convert a value to boolean:
Use the [boolean] method. The following example converts the string 'false' to boolean, resulting in False.
Code
boolean('false')Result
false
To determine if a value passed in a GET or POST request was 0 or greater than zero:
Code
local(mylocal = integer(web_request->param('status')))
if(#mylocal) => {^
'value was true'
else
'value was false'
^}Result
http request: ?status=1 -> true http request: ?status=0 -> false
Please note that periodically LassoSoft will go through the notes and may incorporate information from them into the documentation. Any submission here gives LassoSoft a non-exclusive license and will be made available in various formats to the Lasso community.
LassoSoft Inc. > Home
©LassoSoft Inc 2015 | Web Development by Treefrog Inc | Privacy | Legal terms and Shipping | Contact LassoSoft
Recent Comments