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Delete column from pandas DataFrame
...the original
data can be modified without creating a copy.
Popped
Column selection, addition, deletion
Delete column column-name:
df.pop('column-name')
Examples:
df = DataFrame.from_items([('A', [1, 2, 3]), ('B', [4, 5, 6]), ('C', [7,8, 9])], orient='index', columns=['one', 'two', 'three'])
...
SQL Developer is returning only the date, not the time. How do I fix this?
...WOW... this was beautiful. Can't believe I was doing the conversion in the select statement.
– Leniel Maccaferri
Sep 21 '13 at 0:07
16
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How to get share counts using graph API
...e fql end-point (the link_stat table):
https://graph.facebook.com/fql?q=SELECT url, normalized_url, share_count, like_count, comment_count, total_count,commentsbox_count, comments_fbid, click_count FROM link_stat WHERE url='http://www.google.com'
total_count is the number that shows in the Like...
jQuery selectors on custom data attributes using HTML5
I would like to know what selectors are available for these data attributes that come with HTML5.
4 Answers
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How do I sort a vector of pairs based on the second element of the pair?
...),myComparison);
Now you have to make the comparison based on the second selection
so declare you "myComparison" as
bool myComparison(const pair<int,int> &a,const pair<int,int> &b)
{
return a.second<b.second;
}
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Downloading a Google font and setting up an offline site that uses it
...s" button near "Remove from collection" button and make sure that you have selected other styles you may also need such as 'bold'...
Click the 'Use' tab button on bottom right of the page
Click the download button on top with a down arrow image
Click on "zip file" on the the popup message tha...
How to style dt and dd so they are on the same line?
...
This behaves awkwardly when you select (double click) the first word in the <dd>. It also selects the text inside the <dt> unless there's whitespace (or an &nbsp; if you're using htmlmin) between the <dt> and <dd>.
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MySQL pagination without double-querying?
...p a lot.
The other way is to use SQL_CALC_FOUND_ROWS clause and then call SELECT FOUND_ROWS(). apart from the fact you have to put the FOUND_ROWS() call afterwards, there is a problem with this: There is a bug in MySQL that this tickles that affects ORDER BY queries making it much slower on large t...
How to know that a string starts/ends with a specific string in jQuery?
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var isUnavailable = $("#StatusId option:selected").text().match("^Unavailable - "); - why does this return null when the selected option is "Unavailable - Other" ?
– egmfrs
Nov 28 '19 at 11:54
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#1071 - Specified key was too long; max key length is 1000 bytes
... the best prefix length for a given column? Here's a method to find out:
SELECT
ROUND(SUM(LENGTH(`menu_link`)<10)*100/COUNT(`menu_link`),2) AS pct_length_10,
ROUND(SUM(LENGTH(`menu_link`)<20)*100/COUNT(`menu_link`),2) AS pct_length_20,
ROUND(SUM(LENGTH(`menu_link`)<50)*100/COUNT(`menu_...