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Is it safe to ignore the possibility of SHA collisions in practice?
...ssing on the so-called "birthday paradox". Have a better look at the "nice table", it does not work the way you think. For the figures I give, in that table, it would be a value "10^9" in a column labelled "4.3*10^-60" and row "128 bits" (but the table does not go below 10^-18).
...
Are Exceptions in C++ really slow
...g for the presence of exceptions everywhere, the compiler generates a side table that maps any point that may throw an exception (Program Counter) to the a list of handlers. When an exception is thrown, this list is consulted to pick the right handler (if any) and stack is unwound.
Compared to the ...
What is a correct mime type for docx, pptx etc?
...plication/pkcs8", "plf": "application/vnd.pocketlearn", "pnm": "image/x-portable-anymap", "pbm": "image/x-portable-bitmap", "pcf": "application/x-font-pcf", "pfr": "application/font-tdpfr", "pgn": "application/x-chess-pgn", "pgm": "image/x-portable-graymap", "png": "image/x-png", "ppm": "image/x-por...
doGet and doPost in Servlets
...enting the HTML output from a JSP, such as gathering data for display in a table.
@WebServlet("/products")
public class ProductsServlet extends HttpServlet {
@EJB
private ProductService productService;
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse ...
How to extract year and month from date in PostgreSQL without using to_char() function?
I want to select sql:
SELECT "year-month" from table group by "year-month" AND order by date , where
year-month - format for date "1978-01","1923-12".
select to_char of couse work , but not "right" order:
...
Why can a class not be defined as protected?
...nswered Oct 6 '10 at 4:51
irreputableirreputable
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python pandas: apply a function with arguments to a series
...
Exactly what I was looking for. Notably, this does not require creating a custom function just to handle a Series (or df). Perfect!
– Connor
May 24 '19 at 17:39
...
How do I convert an integer to string as part of a PostgreSQL query?
...ou'll meed to cast to an 64 bit (8-byte) integer. Try this:
SELECT * FROM table
WHERE myint = mytext::int8
The :: cast operator is historical but convenient. Postgres also conforms to the SQL standard syntax
myint = cast ( mytext as int8)
If you have literal text you want to compare with an...
How to replace a character by a newline in Vim
...is ASCII control characters list is different from a complete ASCII symbol table, in that the control characters, which are inserted into a console/pseudoterminal/Vim via the Ctrl key (haha), can be found there.
Whereas in C and most other languages, you usually use the octal codes to represent thes...
How can I horizontally align my divs?
... align just one div horizontally you could do this:
#MyDIV
{
display: table;
margin: 0 auto;
}
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