[lp_logical_in]
| Link | lp_logical_in |
| Author | Bil Corry |
| Category | Conditional |
| Version | 8.x |
| License | Public Domain |
| Posted | 03 Dec 2005 |
| Updated | 03 Dec 2005 |
| More by this author... | |
Description
Evaluates if a value is contained within a list of elements. Returns true or false.
Sample Usage
(lp_logical_in:'abc',(:'abc','def')); (lp_logical_in:'abc','abc,def,ghi'); (lp_logical_in:'gh','abc,def,ghi');
Source Code
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[ define_tag:'lp_logical_in', -description='Searches a list of elements for an item. Returns true or false.', -priority='replace', -required='value', -copy, -required='list', -optional='list_delimiter'; local:'trim' = true; if: params->(find:'-notrim') > 0; local:'trim' = false; else: #value->type == 'string'; #value->trim; /if; if: #list->type == 'array'; local:'listarray' = #list; else; if: local_defined:'list_delimiter'; local:'listarray' = (string:#list)->(split:#list_delimiter); else; // assume comma-delimited local:'listarray' = (string:#list)->(split:','); /if; /if; iterate: #listarray, local:'item'; if: #trim && #item->type == 'string'; #item->trim; /if; if: #item == #value; return: true; /if; /iterate; return: false; /define_tag; ]
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