d******g
发帖数: 34 | 1 1. A practical problem from interviewer’s work.
Write a ‘translator’ program to convert a string (in C++ or other
language) into something which can be applied to the ‘where’ clause in sql
‘select’, here the string can be evaluated to a Boolean value, eg aa==3 &&
bb>12 || … (not sure about the answer. any idea?)
2. What’s garbage collection? What is the disadvantage of using reference
counting? (my ans: ref cycle) | g**e
发帖数: 6127 | 2 1. 没看懂，不就是把==换成=， &&换成and, ||换成or就完了么，还是什么别的意思
2. reference cycle是一个原因，另外一个原因是更新ref counter的时候需要lock，
在多线程的时候开销会很大。
sql
&&
【在 d******g 的大作中提到】
: 1. A practical problem from interviewer’s work.
: Write a ‘translator’ program to convert a string (in C++ or other
: language) into something which can be applied to the ‘where’ clause in sql
: ‘select’, here the string can be evaluated to a Boolean value, eg aa==3 &&
: bb>12 || … (not sure about the answer. any idea?)
: 2. What’s garbage collection? What is the disadvantage of using reference
: counting? (my ans: ref cycle)
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