blob: 2b089232f98a45bbcdc55f4bf971eebe768c61d9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
class Hash
def merge!(other, &block)
raise "can't convert argument into Hash" unless other.respond_to?(:to_hash)
if block
other.each_key{|k|
self[k] = (self.has_key?(k))? block.call(k, self[k], other[k]): other[k]
}
else
other.each_key{|k| self[k] = other[k]}
end
self
end
alias each_pair each
alias update merge!
def fetch(key, none=NONE, &block)
unless self.key?(key)
if block
block.call
elsif none != NONE
none
else
raise RuntimeError, "Key not found: #{key}"
end
else
self[key]
end
end
##
# call-seq:
# hsh.delete_if {| key, value | block } -> hsh
# hsh.delete_if -> an_enumerator
#
# Deletes every key-value pair from <i>hsh</i> for which <i>block</i>
# evaluates to <code>true</code>.
#
# If no block is given, an enumerator is returned instead.
#
# h = { "a" => 100, "b" => 200, "c" => 300 }
# h.delete_if {|key, value| key >= "b" } #=> {"a"=>100}
#
def delete_if(&block)
return to_enum :delete_if unless block_given?
self.each do |k, v|
self.delete(k) if block.call(k, v)
end
self
end
end
|
