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CSS @media print issues with background-color;
...t uses miles of css. I'm attempting to make a printable stylesheet for our app but I'm having issues with background-color in @media print .
...
How can I check if a background image is loaded?
...'<img/>').attr('src', 'http://farm6.static.flickr.com/5049/5220175127_5693faf952.jpg').load(function() { $('html').css('background-image', 'url(http://farm6.static.flickr.com/5049/5220175127_5693faf952.jpg)'); })) and check HTTP requests in Firebug. If I have opened flicker page with this imag...
Permission denied for relation
...t;schema> TO <role>
To specify default permissions that will be applied to future tables use:
ALTER DEFAULT PRIVILEGES IN SCHEMA <schema>
GRANT <privileges> ON TABLES TO <role>;
e.g.
ALTER DEFAULT PRIVILEGES IN SCHEMA public
GRANT SELECT, INSERT, UPDATE, DELETE...
Why is pow(a, d, n) so much faster than a**d % n?
... +1 that's actually what the docstring implies >>> print pow.__doc__ pow(x, y[, z]) -> number With two arguments, equivalent to x**y. With three arguments, equivalent to (x**y) % z, but may be more efficient (e.g. for longs).
– Hedde van der Heide
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How can query string parameters be forwarded through a proxy_pass with nginx?
...
I use a slightly modified version of kolbyjack's second approach with ~ instead of ~*.
location ~ ^/service/ {
proxy_pass http://apache/$uri$is_args$args;
}
share
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improve th...
Adding :default => true to boolean in existing Rails column
...dding a default boolean value to an existing column. So I tried the change_column suggestion but I mustn't be doing it right.
...
What is the correct way to represent null XML elements?
...belongs to no series, while omitting series could mean that series is an inapplicable element to the current element.)
From: The W3C
XML Schema: Structures introduces a
mechanism for signaling that an
element should be accepted as ·valid·
when it has no content despite a
content type ...
Python group by
....groupby but it requires the input to be sorted first.
>>> sorted_input = sorted(input, key=itemgetter(1))
>>> groups = groupby(sorted_input, key=itemgetter(1))
>>> [{'type':k, 'items':[x[0] for x in v]} for k, v in groups]
[{'items': ['5238761', '5349618', '962142', '779...
Extract elements of list at odd positions
...ust a notation for list slicing. Usually it is in the following form:
some_list[start:stop:step]
If we omitted start, the default (0) would be used. So the first element (at position 0, because the indexes are 0-based) would be selected. In this case the second element will be selected.
Because ...
Checking for a null int value from a Java ResultSet
...the field value is NULL, I suggest:
int iVal = 0;
ResultSet rs = magicallyAppearingStmt.executeQuery(query);
if (rs.next()) {
iVal = rs.getInt("ID_PARENT");
if (rs.wasNull()) {
// handle NULL field value
}
}
(Edited as @martin comments below; the OP code as written would not c...