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Contents
require 'puppet/parser/ast/lambda'
Puppet::Parser::Functions::newfunction(
:reject,
:type => :rvalue,
:arity => 2,
:doc => <<-'ENDHEREDOC') do |args|
Applies a parameterized block to each element in a sequence of entries from the first
argument and returns an array with the entires for which the block did *not* evaluate to true.
This function takes two mandatory arguments: the first should be an Array or a Hash, and the second
a parameterized block as produced by the puppet syntax:
$a.reject |$x| { ... }
When the first argument is an Array, the block is called with each entry in turn. When the first argument
is a hash the entry is an array with `[key, value]`.
The returned filtered object is of the same type as the receiver.
*Examples*
# selects all that does not end with berry
$a = ["rasberry", "blueberry", "orange"]
$a.reject |$x| { $x =~ /berry$/ }
- Since 3.2
- requires `parser = future`.
ENDHEREDOC
receiver = args[0]
pblock = args[1]
raise ArgumentError, ("reject(): wrong argument type (#{pblock.class}; must be a parameterized block.") unless pblock.is_a? Puppet::Parser::AST::Lambda
case receiver
when Array
receiver.reject {|x| pblock.call(self, x) }
when Hash
result = receiver.reject {|x, y| pblock.call(self, [x, y]) }
# Ruby 1.8.7 returns Array
result = Hash[result] unless result.is_a? Hash
result
else
raise ArgumentError, ("reject(): wrong argument type (#{receiver.class}; must be an Array or a Hash.")
end
end
Version data entries
11 entries across 11 versions & 1 rubygems