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Delete rows from a pandas DataFrame based on a conditional expression involving len(string) giving K
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I will expand on @User's generic solution to provide a drop free alternative. This is for folks directed here based on the question's title (not OP 's problem)
Say you want to delete all rows with negative values. One liner solution is:-
df = df[(df > 0).all(axis=1)]
Step by ...
地图组件（高德地图） · App Inventor 2 中文网
...略和使用条款 关注公众号，精彩不错过！ #free_v { border:none; position:fixed; top:40%; left:5px; width:200px; height:500px; display: none;}@media screen and (max-width: 700px) { #free_v { top:200%; }}
Get last element of Stream/List in a one-liner
...es no mention if reduce obeys encounter order, and a terminal operation is free to ignore encounter order even if the stream is ordered. As an aside, the word "commutative" doesn't appear in the Stream javadocs, so its absence does not tell us much.
– Aleksandr Dubinsky
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Difference between API and ABI
...ct *myobject = mylib_init(1);
assert(myobject->old_field == 1);
free(myobject);
return EXIT_SUCCESS;
}
mylib.c
#include <stdlib.h>
#include "mylib.h"
mylib_mystruct* mylib_init(int old_field) {
mylib_mystruct *myobject;
myobject = malloc(sizeof(mylib_mystruct));
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Space between two rows in a table?
...sweetness. Also gave the first row more spacing with the tbody setup. Feel free to use!
Support notice: IE8+, Chrome, Firefox, Safari, Opera 4+
.spacing-table {
font-family: 'Helvetica', 'Arial', sans-serif;
font-size: 15px;
border-collapse: separate;
table-layout: fixed;
width:...
PHP + curl, HTTP POST sample code?
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Your code won't close the handle and free resources, because you curl_close after throwing an exception. You should curl_close inside a finally block.
– emix
Jan 25 '19 at 10:04
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Why does C++ not allow inherited friendship?
... of breaking your clients code each time, surely this is not desirable.
I freely admit that for homework/pet projects dependency is often a far away consideration. On small size projects it doesn't matter. But as soon as several persons work on the same project and this grows into the dozens of tho...
How to save all the variables in the current python session?
...turn a dictionary representing the current local symbol table.
Free variables are returned by locals() when it is called in function blocks, but not in class blocks.
Example of globals and dir():
>>> x = 3 #note variable value and name bellow
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Google Maps API 3 - Custom marker color for default (dot) marker
...atlng,
icon: new google.maps.MarkerImage(
'http://www.gettyicons.com/free-icons/108/gis-gps/png/24/needle_left_yellow_2_24.png',
new google.maps.Size(24, 24),
new google.maps.Point(0, 0),
new google.maps.Point(0, 24)
)
});
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How to display hidden characters by default (ZERO WIDTH SPACE ie. ​)
... only in View -> Active Editor -> Show WhiteSpaces.
Edit:
Had some free time since it looks like a popular issue, I had written a plugin to inspect the code for such abnormalities. It is called Zero Width Characters locator and you're welcome to give it a try.
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