ifilter should be faster when it finds a result
ifilter should be faster when it finds a result

pjotrp/bioruby-vcf,CuppenResearch/bioruby-vcf,gusevfe/bioruby-vcf,pjotrp/bioruby-vcf,CuppenResearch/bioruby-vcf,gusevfe/bioruby-vcf,CuppenResearch/bioruby-vcf,gusevfe/bioruby-vcf,pjotrp/bioruby-vcf