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Is there an alternative sleep function in C to milliseconds?
... tv.tv_sec = milliseconds / 1000; tv.tv_usec = milliseconds % 1000 * 1000; select(0, NULL, NULL, NULL, &tv); instead of usleep(milliseconds * 1000);. Credit goes here.
– Josh Sanford
Sep 29 '16 at 18:18
...
Border around specific rows in a table?
...etty dynamic data. Using nth-child(), nth-last-child(), and not(), you can select any rows/cells you want (as long as you know the relative indexes of things in the table). For example, you can select all rows except the top two and bottom one with tr:not(:nth-child(-n+2)):not(:nth-last-child(1))
...
CodeFile vs CodeBehind
...bute of the Page directive or is there a way to create a web project which selects codebehind or codefile, by default, each time a new web page is added?
– Matt W
Nov 5 '09 at 8:42
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Convert pandas dataframe to NumPy array
...ution, in this case, to_numpy without explaining how to recover the column selecting functionality of as_matrix! I am sure there are other ways to select columns, but as_matrix was at least one of them!
– Jérémie
Jul 31 '19 at 23:50
...
How to iterate over values of an Enum having flags?
... .Split(new[] { ", " }, StringSplitOptions.None)
.Select(v => (Items)Enum.Parse(typeof(Items), v));
// This method will always end up with the most applicable values
value = Items.Bar | Items.Baz;
values = value.ToString()
.Split(new[] { ", " }, StringSplit...
PSQLException: current transaction is aborted, commands ignored until end of transaction block
...t = connection.createStatement();
statement.executeQuery("select * from moobar");
//This SQL is correctly formed, yet it throws the
//'transaction is aborted' SQL Exception, why? Because:
//A. you were in a transaction.
//B. You ran a SQL stateme...
Weighted random numbers
...
if you have a bag of red and blue marbles and you select a red marble from it and don't replace it is the probability of selecting another red marble still the same? In the same way, your statement "Pick elements from the bag sequentially until it is empty" produces a totall...
How can I use grep to show just filenames on Linux?
...andard:
-l
(The letter ell.) Write only the names of files containing selected
lines to standard output. Pathnames are written once per file searched.
If the standard input is searched, a pathname of (standard input) will
be written, in the POSIX locale. In other locales, standard i...
Increment a database field by 1
...complex depending on your specific needs:
INSERT into mytable (logins)
SELECT max(logins) + 1
FROM mytable
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How to join (merge) data frames (inner, outer, left, right)
...s these operations in SQL.
library(sqldf)
## inner join
df3 <- sqldf("SELECT CustomerId, Product, State
FROM df1
JOIN df2 USING(CustomerID)")
## left join (substitute 'right' for right join)
df4 <- sqldf("SELECT CustomerId, Product, State
FROM df1...