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How to apply a function to two columns of Pandas dataframe
...e you're using apply(), it applies the function in an element-wise fashion down the whole column. Brilliant! Thank you for posting!
– Data-phile
May 31 '19 at 22:36
2
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Generating an Excel file in ASP.NET [closed]
...ing from the server (using SharpZipLib is an option) works great to reduce download times--actually, it should be mentioned that OpenXML is stored in a ZIP container anyway. @Brian: I use complex SpreadsheetML in the 50-100MB range on a daily basis without crashing problems.
–...
Why doesn't margin:auto center an image?
...cal alignment is not as straight forward as you might have hoped. It's all down to the CSS spec - check out this beautifully concise article on the matter - phrogz.net/css/vertical-align/index.html
– TheDeadMedic
Jun 10 '10 at 14:33
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Insert string at specified position
...oked alright, the query resulted in a error which took me a while to track down. The following is my version of the stringInsert function requiring only one parameter.
function stringInsert($str,$insertstr,$pos)
{
$str = substr($str, 0, $pos) . $insertstr . substr($str, $pos);
return $str;
...
How to draw a line in android
... switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
touch_start(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
touch_move(x, y);
invalidate();
...
How to delete duplicates on a MySQL table?
...x.
Every row that is not that max has value maxtimestamp of NULL. Filter down on those NULL rows and you have a set of all rows grouped by foo and bar that isn't the latest timestamp baz. Delete those ones.
Make a backup of the table before you run this.
Prevent this problem from ever happe...
Printing leading 0's in C?
... @Elric If you give a numeric argument to the man command, it narrows it down to that particular section. Without it, you'll get the man page for the shell command printf instead of the C function.
– Paul Tomblin
Feb 25 '18 at 16:51
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GB English, or US English?
...: Do you have a link to the mentioned recommendation? I searched it up and down without success.
– Dio F
May 14 '13 at 14:28
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How to allow only one radio button to be checked?
... @norcaljohnny Should be reported/flagged but just voting it down is as innacurate
– PHPer
Nov 18 '19 at 12:44
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How would I run an async Task method synchronously?
...g inside a using block happens asynchronously, with a wait at the end. The downside is that you need to unwrap the task yourself in a callback, but it's still fairly elegant, especially if you need to call several async functions at once.
– Tom Jacques
Jun 25 '...