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Get average color of image via Javascript
... Canvas or SVG.
Actually, someone just managed to generate client-side PNG files using JavaScript, without canvas or SVG, using the data URI scheme.
Second: you might actually not need Canvas, SVG or any of the above at all.
If you only need to process images on the client side, without modifying t...
Count the occurrences of DISTINCT values
...r for the question, I would like to make a correction on her comment to avoid leading new people astray. If you leave off the "group by" in a MySQL query, you don't get [Mike, 1], [Mike, 1], you get a single result which will be the name on the FIRST row returned, and a count of number of rows in ...
Entity Framework Join 3 Tables
...ntext.tbl_EntryPoint
join e in dbContext.tbl_Entry on ep.EID equals e.EID
join t in dbContext.tbl_Title on e.TID equals t.TID
where e.OwnerID == user.UID
select new {
UID = e.OwnerID,
TID = ...
What is the proper way to check if a string is empty in Perl?
...hink that length is the closest test that we have to the expression of the idea that there is nothing in the string.
– brian d foy
Jan 12 '10 at 11:23
6
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Multi-statement Table Valued Function vs Inline Table Valued Function
...uery each time it is called and, most importantly, filters on the customer id. In a large query, the optimizer would not be able to take advantage of other types of joins as it would need to call the function for each customerId passed. However, if you re-wrote your MSTV function like so:
CREATE FU...
deleting rows in numpy array
... answered Jul 26 '12 at 5:48
Jaidev DeshpandeJaidev Deshpande
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Check number of arguments passed to a Bash script
...itional Expressions
Conditional Constructs
Pattern Matching
Word Splitting
Filename Expansion (prev. Pathname Expansion)
Simple Commands
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Difference between map, applymap and apply methods in Pandas
...'d probably use apply just for the sake of clarity.
series.apply(download_file_for_every_element)
Map can use not only a function, but also a dictionary or another series. Let's say you want to manipulate permutations.
Take
1 2 3 4 5
2 1 4 5 3
The square of this permutation is
1 2 3 4 5
1 2...
How to combine two or more querysets in a Django view?
...tter instead of a lambda. I remember reading about it being faster, but I didn't see a noticeable speed difference for a million item list.
from operator import attrgetter
result_list = sorted(
chain(page_list, article_list, post_list),
key=attrgetter('date_created'))
...
How to change a DIV padding without affecting the width/height ?
I have a div that I want to specify a FIXED width and height for, and also a padding which can be changed without decreasing the original DIV width/height or increasing it, is there a CSS trick for that, or an alternative using padding?
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