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Getting the name of the currently executing method
...at a lot of work has gone into making HotSpot very reliable. You need to know, though, in case you want your code to not rely on the behavior of a specific JVM.
– Thorbjørn Ravn Andersen
Apr 15 '13 at 8:53
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Include headers when using SELECT INTO OUTFILE?
...o a temporary table before dumping everything, it has been over 10 minutes now and still waiting for the temporary table to get written on disk! Be aware of that! You'd certainly prefer adding the column names another way, even if it means opening the file after with another programming language.
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How does one reorder columns in a data frame?
... @user4050: you can also use df[,c(1,3,2,4:ncol(df))] when you don't know how many columns there are.
– arekolek
Mar 15 '16 at 14:28
1
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Real life example, when to use OUTER / CROSS APPLY in SQL
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@mr_eclair looks like it is now at itprotoday.com/software-development/…
– Martin Smith
May 19 '18 at 10:22
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Relative imports in Python 3
... imports work intuitively. I just want to be able to import things that I know are in the same directory. I wonder what his reasoning was
– YungGun
Sep 12 '19 at 3:46
14
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How do I sort a vector of pairs based on the second element of the pair?
... c++14, the best solution is very easy to write thanks to lambdas that can now have parameters of type auto. This is my current favorite solution
std::sort(v.begin(), v.end(), [](auto &left, auto &right) {
return left.second < right.second;
});
Just use a custom comparator (it's ...
How do you make sure email you send programmatically is not automatically marked as spam?
... URLs as linking text, make sure that the URL matches the linking text. I know that Thunderbird automatically flags them as being a scam if not.
The wrong way:
Go to your account now: <a href="http://www.paypal.com.phishers-anonymous.org/">http://www.paypal.com</a>
The right way:
Go...
Scanner vs. StringTokenizer vs. String.Split
I just learned about Java's Scanner class and now I'm wondering how it compares/competes with the StringTokenizer and String.Split. I know that the StringTokenizer and String.Split only work on Strings, so why would I want to use the Scanner for a String? Is Scanner just intended to be one-stop-shop...
Programmatically access currency exchange rates [closed]
...change Rates project data has been moved away from GitHub.
It is available now at: http://openexchangerates.org/
Data in JSON format is available at: http://openexchangerates.org/latest.json
No access fees, no rate limits, No ugly XML - just free, hourly updated exchange rates in JSON format.
This ...
How do I convert a dictionary to a JSON String in C#?
...rt my Dictionary<int,List<int>> to JSON string. Does anyone know how to achieve this in C#?
13 Answers
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