1) . select * from demo where id<=10 and name='zhangsan' and (sex='0' or 'age'>=18); 2).select * from demo where id<=10 and name='zhangsan' and sex='0' or 'age'>=18; 3).sel
我在阅读CSS2.2，但是我真的无法理解这句话的意思，以及它所适合的场景： If the top and bottom margins of an element with clearance p. 157 are adjoining, its margins collapse with the adjoining margins...
public abstract boolean isViewFromObject (View view, Object object) Determines whether a page View is associated with a specific key object as returned by instantiateItem(ViewGroup, int). This meth...
