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ef59670a44
* st.c (hash_pos): use bitwise AND to avoid slow modulo op (new_size): power-of-two sizes for hash_pos change (st_numhash): adjust for common keys due to lack of prime modulo [Feature #9425] * hash.c (rb_any_hash): right shift for symbols * benchmark/bm_hash_aref_miss.rb: added to show improvement * benchmark/bm_hash_aref_sym_long.rb: ditto * benchmark/bm_hash_aref_str.rb: ditto * benchmark/bm_hash_aref_sym.rb: ditto * benchmark/bm_hash_ident_num.rb: added to prevent regression * benchmark/bm_hash_ident_obj.rb: ditto * benchmark/bm_hash_ident_str.rb: ditto * benchmark/bm_hash_ident_sym.rb: ditto git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45384 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
8 lines
342 B
Ruby
8 lines
342 B
Ruby
h = {}
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syms = %w[puts warn syswrite write stat bacon lettuce tomato
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some symbols in this array may already be interned others should not be
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hash browns make good breakfast but not cooked using prime numbers
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shift for division entries delete_if keys exist?
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].map!(&:to_sym)
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syms.each { |s| h[s] = s }
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200_000.times { syms.each { |s| h[s] } }
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