the_one multimethod

Methods

the_one(e:Eachable1, pattern:Any=method, body:Fun=method, found_more:Any=block, found_none:Any=block) Source: stdlib.ngs:1601

Find the only element that matches the pattern and execute given code with the value

Parameters

body	The code to execute when exactly one element that matches the pattern was found. Executed with the found value. It's value will be returned as result of the_one().
found_more	The code to execute when more than one element matches the pattern. It's value will be returned as result of the_one(). Defaults to throwing an exception.
found_none	The code to execute when none of the elements match the pattern. It's value will be returned as result of the_one(). Defaults to exception.

Returns

Result of running on of the following: body, found_more, found_none

Example

F name(dn:MethodDocNode) {
	dn.children.the_one(MethodNameDocNode).text[0]
}