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what is the right way to treat Python argparse.Namespace() as a dictionary?
... dictionary proxies), the rest of the cases are updateable. The vars(obj) call is synonymous with obj.__dict__. In the case of an argparse namespace, vars(args) gives direct access to an updateable dictionary.
– Raymond Hettinger
Jun 2 '13 at 0:04
...
Clustered vs Non-Clustered
... applying the clustered index to PersonId means that the rows will be physically sorted by PersonId in the table, allowing an index search on this to go straight to the row (rather than a non-clustered index, which would direct you to the row's location, adding an extra step).
That said, it's unusu...
Why does the C++ map type argument require an empty constructor when using []?
... Why is that std::<map>::value_type there in the insert call?
– thomthom
May 6 '15 at 11:53
...
datetime dtypes in pandas read_csv
...way of solving this
The pandas.read_csv() function has a keyword argument called parse_dates
Using this you can on the fly convert strings, floats or integers into datetimes using the default date_parser (dateutil.parser.parser)
headers = ['col1', 'col2', 'col3', 'col4']
dtypes = {'col1': 'str', ...
MySQL Error 1093 - Can't specify target table for update in FROM clause
...n case certain operations are carried out, merging cannot happen. E.g. provide the derived dummy table with a LIMIT (to inifity) and the error will never occur. That's pretty hackish though and there is still the risk that future versions of MySQL will support merging queries with LIMIT after all.
...
Rails 3: Get Random Record
... on an indexed column (PostgreSQL syntax):
select *
from my_table
where id >= trunc(
random() * (select max(id) from my_table) + 1
)
order by id
limit 1;
share
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improve this answer
...
Switching the order of block elements with CSS [duplicate]
...ly need to support a single modern browser: Mobile Safari.
See: http://jsfiddle.net/thirtydot/hLUHL/
You can remove the -moz- prefixed properties if you like, I just left them in for future readers.
#blockContainer {
display: -webkit-box;
display: -moz-box;
disp...
Operation on every pair of element in a list
...Odd, when I run itertools.product(my_list, 2), it complains that int isn't callable. Works once I change it to: itertools.product(my_list, repeat=2)
– ojrac
Jun 3 '09 at 0:34
...
JS Client-Side Exif Orientation: Rotate and Mirror JPEG Images
...ion extraction demo.
function resetOrientation(srcBase64, srcOrientation, callback) {
var img = new Image();
img.onload = function() {
var width = img.width,
height = img.height,
canvas = document.createElement('canvas'),
ctx = canvas.getContext("2d");
// s...
PostgreSQL delete with inner join
...
DELETE
FROM m_productprice B
USING m_product C
WHERE B.m_product_id = C.m_product_id AND
C.upc = '7094' AND
B.m_pricelist_version_id='1000020';
or
DELETE
FROM m_productprice
WHERE m_pricelist_version_id='1000020' AND
m_product_id IN (SELECT m_product...