doc: Merged old docs for Hash#get.
doc: Merged old docs for Hash#get.

292388900/prototype,ShefronYudy/prototype,ridixcr/prototype,loduis/prototype,sdumitriu/prototype,baiyanghese/prototype,loduis/prototype,ShefronYudy/prototype,leafo/prototype,loduis/prototype,ShefronYudy/prototype,erpframework/prototype,lamsieuquay/prototype,lamsieuquay/prototype,fashionsun/prototype,baiyanghese/prototype,Jiasm/prototype,sstephenson/prototype,leafo/prototype,sdumitriu/prototype,Jiasm/prototype,Jiasm/prototype,erpframework/prototype,Gargaj/prototype,Gargaj/prototype,erpframework/prototype,Gargaj/prototype,292388900/prototype,ldf7801528/prototype,ldf7801528/prototype,292388900/prototype,sdumitriu/prototype,fashionsun/prototype,sstephenson/prototype,fashionsun/prototype,ridixcr/prototype,lamsieuquay/prototype,sstephenson/prototype,ridixcr/prototype,ldf7801528/prototype