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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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Extract only right most n letters from a string
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if you are not sure of the length of your string, but you are sure of the words count (always 2 words in this case, like 'xxx yyyyyy') you'd better use split.
string Result = "PER 343573".Split(" ")[1];
this always returns the second word of your string.
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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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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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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) &...
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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