js,py,ru

语言	javascript	python	ruby
条件循环	if ( ) {·····} else if ( ){······} else{·····}	if ·········: ·········· elif········: ··········· else : ···········	if·········· ··········· elsif······· ··········· else ··········· end
打印	console.log("·····")	print ······	print········ puts·······
注释	//······· /*··········*/	#······ ”“”·······“”“	#·········· =begin ····· =end
片段	A.substring(0,3)
方法	A.length	len(A) A.upper() str(A) A.lower()	A.length A.reverse A.upcase A.downcase A.capitalize!
连结		”·····“+”·······“ " "," "
函数	var A = function() {····················}	def A ( ) : ············
替换		print %s %("···")
大小	true / false	True / False	true /false (随意 )
布尔	! / && / ||	not / and / or	! / && / ||
循环	for(i=0 ; i<8 ; i++) { ··················}		while···· ····· end for x in 1...10 ········ end
自运算	x++ x+=2 【+-*/】	x*=2 【+-*/】	x+=2 【+-*/】
数组	[ ]	[ lists ] {key1:a, key2:b} list.append( ) list.sort( ) list.remove( ) len( list ) residens[ ] index[ ] dictionary[ 'key' ]=sth del dic_name[ key_name ] range( )	[ arry ] { hash }
简写	·····? A : b
弹出	prompt	raw_input	gets.chomp
导入模块		from module import function
数学函数		max( ) min( ) abs( ) type( )
特色			A.method1.method2
打印衔接	“A”+“B”		“A #{B}”
迭代			loop do ·········· break if···· end
其他		for X in array : ················· for i in (0,range(x))	10.times{ do sth }