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isMember
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The isMember function determines whether or not the specified key
{key} is a member of the {target} Structure. If the {key} is found, true is returned.
If {key} is not found, false is returned. The isMember
function uses the isEqual predicate.
The isMember function is used to determine if a symbolic key is in a specified Structure. It returns a Boolean value true if found in the Structure or false if not found. If the desired information is the index of the symbolic key, then the member function should be used instead
(isMember key obj) Returns true if the key was found. Returns false if the key was not found.
Here are a number of links to Lambda coding examples which contain this instruction in various use cases.
Example_Structure_isMember_001
Here are the links to the data types of the function arguments. Here are also a number of links to functions having arguments with any of these data types.
You can always talk with the AIS at aiserver.sourceforge.net.
Name
Description
AIS Types key The key to search for (it must be a symbol). Symbol obj The target object. Structure
Returns:
Examples
Argument Types
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