Sometimes we can not compare things 有時(shí)我們不能光做比較。
Remember using the comparative form of the adjective when comparing things , e . g 記住當(dāng)比較不同事物時(shí)用形容詞的比較級(jí),例如
Although it may be foolhardy to compare things as complex as religions , people do 盡管把宗教看作大雜燴樣的東西是不明智的,人們確實(shí)是這樣看的。
A good way to come up with new ideas is to compare things that are different at the first sight 提出新觀點(diǎn)的一個(gè)好方法就是比較那些乍看上去不同的東西。
But there is still only one value . undefined scalars contain the " undef " value . you shouldn t compare anything to undef , the way you would compare things to null in c c java 如果在c / c + + / java程序中,您可以將其他值與null比較,但在perl中卻不能拿任何東西來與" undef "做比較。