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%d,%c,%s,%x等转换符 释义 - C/C++ - 清泛IT论坛，有思想、有深度
...志〕〔输出最少宽度〕〔．精度〕〔长度〕类型
"％-md" ：左对齐，若m比实际少时，按实际输出。
"%m.ns"：输出m位，取字符串(左起)n位，左补空格，当n>m or m省略时m=n
e.g. "%7.2s" 输入CHINA
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Memoization in Haskell?
...on how to solve efficiently the following function in Haskell, for large numbers (n > 108)
8 Answers
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How to highlight text using javascript
Can someone help me with a javascript function that can highlight text on a web page.
And the requirement is to - highlight only once, not like highlight all occurrences of the text as we do in case of search.
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MySQL date format DD/MM/YYYY select query?
I'm a bit confused on how to order by date formats.
8 Answers
8
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Python date string to date object
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You can use strptime in the datetime package of Python:
>>> import datetime
>>> datetime.datetime.strptime('24052010', "%d%m%Y").date()
datetime.date(2010, 5, 24)
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How to tell whether a point is to the right or left side of a line
I have a set of points. I want to separate them into 2 distinct sets. To do this, I choose two points ( a and b ) and draw an imaginary line between them. Now I want to have all points that are left from this line in one set and those that are right from this line in the other set.
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How to remove from a map while iterating it?
How do I remove from a map while iterating it? like:
6 Answers
6
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T-SQL split string
I have a SQL Server 2008 R2 column containing a string which I need to split by a comma. I have seen many answers on StackOverflow but none of them works in R2. I have made sure I have select permissions on any split function examples. Any help greatly appreciated.
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How to copy a dictionary and only edit the copy
Can someone please explain this to me? This doesn't make any sense to me.
20 Answers
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What integer hash function are good that accepts an integer hash key?
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Knuth's multiplicative method:
hash(i)=i*2654435761 mod 2^32
In general, you should pick a multiplier that is in the order of your hash size (2^32 in the example) and has no common factors with it. This way the hash function cover...