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Why is i++ not atomic?
...s the ll and sc: load-linked, and store-conditional. Load-linked reads the word, and store-conditional stores the new value if the word has not changed, or else it fails (which is detected and causes a re-try).
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How to convert a String into an ArrayList?
In my String, I can have an arbitrary number of words which are comma separated. I wanted each word added into an ArrayList. E.g.:
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Get an object's class name at runtime
...ts the entire constructor code as a string and applies a regex to get all 'words'. The first word should be 'function' and the second word should be the name of the class.
Hope this helps.
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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ks对象
源Excel：
生成的结果Excel：
5、工程源码下载：ExcelDemo.zip
1233|1234|1455|2067C++ 高速读写 EXCEL OLE COM
PostgreSQL naming conventions
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Regarding tables names, case, etc, the prevalent convention is:
SQL keywords: UPPER CASE
names (identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgres...
What's the difference between a catalog and a schema in a relational database?
...ppings (external/conceptual, conceptual/internal) are kept.
In other words, the catalog contains detailed information (sometimes called descriptor information or metadata) regarding the various objects that are of interest to the system itself.
For example, the optimizer uses catalog info...
How to remove line breaks from a file in Java?
...t.replace("\r\n", " ").replace("\n", " "); is a better solution: otherwise words will be "glued" to each other (without the single-space replacement).
– Bart Kiers
Jan 29 '10 at 15:54
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Vim: faster way to select blocks of text in visual mode
...select the range of text matching your search; i.e: find and select (whole word) your search term?
– Daniel Park
Oct 30 '13 at 21:54
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What is cardinality in MySQL?
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What's with this fetish for big words. "Distinctness" would work fine isn't it?
– Pacerier
Feb 1 '15 at 23:14
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round() for float in C++
...n:
float roundf(x)
{
int signbit;
__uint32_t w;
/* Most significant word, least significant word. */
int exponent_less_127;
GET_FLOAT_WORD(w, x);
/* Extract sign bit. */
signbit = w & 0x80000000;
/* Extract exponent field. */
exponent_less_127 = (int)((w & 0x7f800000) &...