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How to print a dictionary's key?
...n x.items()))
# To print all pairs of (key, value) one at a time
for e in range(len(x)):
print(([key for key in x.keys()][e], [value for value in x.values()][e]))
# To print all pairs (key, value) in a tuple
print(tuple(([key for key in x.keys()][i], [value for value in x.values()][i]) for i i...
OPTION (RECOMPILE) is Always Faster; Why?
...ATISTICS - Statistics are out of date. A database stores statistics on the range and distribution of the types of values in various column on tables and indexes. This helps the query engine to develop a "Plan" of attack for how it will do the query, for example the type of method it will use to matc...
Clean ways to write multiple 'for' loops
...the for loops can be a lot confusing, just to save few characters. I'd use range-for loops instead:
for (auto& k : A)
for (auto& i : k)
for (auto& j : i)
do_something_on_A(j);
Of course you can replace auto& with const auto& if you are, in fact, not mod...
Test or check if sheet exists
...hat name, hence the Not. It's a little easier (but not valid) if you re-arrange a bit to SheetExists = sht Is Not Nothing
– Tim Williams
Oct 15 '15 at 21:12
4
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How to convert char to int?
...nt)(value - '0');
if (i < 0 || i > 9) throw new ArgumentOutOfRangeException("value");
return i;
}
}
then use int x = c.ParseInt32();
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How to remove convexity defects in a Sudoku square?
...justed, {fnX @@ Reverse[#], fnY @@ Reverse[#]} &, {9*50, 9*50},
PlotRange -> {{1, 10}, {1, 10}}, DataRange -> Full]
All of the operations are basic image processing function, so this should be possible in OpenCV, too. The spline-based image transformation might be harder, but I don'...
What are file descriptors, explained in simple terms?
...tandard Output, and file descriptor 2 with Standard Error.
File descriptor ranges from 0 to OPEN_MAX. File descriptor max value can be obtained with ulimit -n. For more information, go through 3rd chapter of APUE Book.
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Pandas dataframe get first row of each group
...like the first three, for example, use a sequence like nth((0,1,2)) or nth(range(3)).
– Ronan Paixão
Sep 8 '16 at 2:34
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Selecting a row in DataGridView programmatically
How can I select a particular range of rows in a DataGridView programmatically at runtime?
8 Answers
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How to index characters in a Golang string?
...ay reconvert the string on each iteration for, O(n²). Just do for _, r := range word { fmt.Printf("%c", r) }. If you really wanted to loop with an index for x := 0; x < limit; x++. Please learn the basics of a language before answering questions.
– Dave C
A...