Use has_key? rather than accessing the value
Use has_key? rather than accessing the value

mgrimes/brew,konqui/brew,aw1621107/brew,ilovezfs/brew,rwhogg/brew,gordonmcshane/homebrew,staticfloat/brew,mgrimes/brew,palxex/brew,ilovezfs/brew,hanxue/linuxbrew,Linuxbrew/brew,MikeMcQuaid/brew,Linuxbrew/brew,JCount/brew,pseudocody/brew,zmwangx/brew,jmsundar/brew,reelsense/brew,amar-laksh/brew_sudo,claui/brew,reitermarkus/brew,mistydemeo/homebrew,mahori/brew,aw1621107/brew,JCount/brew,JCount/brew,ilovezfs/brew,AnastasiaSulyagina/brew,alyssais/brew,toonetown/homebrew,gregory-nisbet/brew,pseudocody/brew,aw1621107/brew,amar-laksh/brew_sudo,gordonmcshane/homebrew,konqui/brew,DomT4/brew,muellermartin/dist,EricFromCanada/brew,tonyg/homebrew,mahori/brew,muellermartin/dist,Homebrew/brew,muellermartin/dist,MikeMcQuaid/brew,zmwangx/brew,Homebrew/brew,AnastasiaSulyagina/brew,konqui/brew,maxim-belkin/brew,gordonmcshane/homebrew,mistydemeo/homebrew,jmsundar/brew,reitermarkus/brew,sjackman/homebrew,vitorgalvao/brew,gregory-nisbet/brew,palxex/brew,EricFromCanada/brew,mistydemeo/homebrew,toonetown/homebrew,bfontaine/brew,tonyg/homebrew,jmsundar/brew,claui/brew,mahori/brew,konqui/brew,hanxue/linuxbrew,staticfloat/brew,AnastasiaSulyagina/brew,Linuxbrew/brew,zmwangx/brew,bfontaine/brew,reitermarkus/brew,pseudocody/brew,reelsense/brew,rwhogg/brew,mgrimes/brew,nandub/brew,MikeMcQuaid/brew,maxim-belkin/brew,tonyg/homebrew,EricFromCanada/brew,claui/brew,hanxue/linuxbrew,Homebrew/brew,rwhogg/brew,nandub/brew,toonetown/homebrew,nandub/brew,sjackman/homebrew,gregory-nisbet/brew,Linuxbrew/brew,alyssais/brew,EricFromCanada/brew,JCount/brew,vitorgalvao/brew,Homebrew/brew,mahori/brew,sjackman/homebrew,vitorgalvao/brew,DomT4/brew,DomT4/brew,palxex/brew,staticfloat/brew,DomT4/brew,maxim-belkin/brew,reelsense/brew,amar-laksh/brew_sudo,reitermarkus/brew,alyssais/brew,bfontaine/brew,sjackman/homebrew,claui/brew,nandub/brew,MikeMcQuaid/brew,vitorgalvao/brew