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SQL Server NOLOCK and joins
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I was pretty sure that you need to specify the NOLOCK for each JOIN in the query. But my experience was limited to SQL Server 2005.
When I looked up MSDN just to confirm, I couldn't find anything definite. The below statements do seem to make me think, that for 20...
Algorithm to detect corners of paper sheet in photo
...ine outputted from the hough transform it would give a rho and theta pair. If these values were within, say 5% of a pair of values in the table, they were discarded, if they were outside that 5%, a new entry was added to the table.
You can then do analysis of parallel lines or distance between line...
How do I perform HTML decoding/encoding using Python/Django?
...base. It'd be worth looking into getting unescaped results back from BeautifulSoup if possible, and avoiding this process altogether.
With Django, escaping only occurs during template rendering; so to prevent escaping you just tell the templating engine not to escape your string. To do that, use ...
What's the best way to break from nested loops in JavaScript?
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Please consider accepting the other answer. If not for Andrew Hedges comment (thanks btw.), I would have thought: ah, so javascript does not have that feature. And I bet many in the community might overlook the comment and think just the same.
– J...
postgresql - add boolean column to table set default
... ADD COLUMN "priv_user" BOOLEAN DEFAULT FALSE;
you can also directly specify NOT NULL
ALTER TABLE users
ADD COLUMN "priv_user" BOOLEAN NOT NULL DEFAULT FALSE;
UPDATE: following is only true for versions before postgresql 11.
As Craig mentioned on filled tables it is more efficient to split i...
Are nested try/except blocks in python a good programming practice?
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In summary the only problem would be your code getting too much indented. If you feel like it, try to simplify some of the nestings like lqc suggested in the suggested answer above.
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Eclipse: Can you format code on save?
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@PéterVarga if you're using PyDev, check this
– grisaitis
Jun 29 '12 at 18:42
1
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Get top n records for each group of grouped results
...s, using UNION ALL (See SQL Fiddle with Demo). This works with two groups, if you have more than two groups, then you would need to specify the group number and add queries for each group:
(
select *
from mytable
where `group` = 1
order by age desc
LIMIT 2
)
UNION ALL
(
select *
from...
RuntimeWarning: invalid value encountered in divide
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I think your code is trying to "divide by zero" or "divide by NaN". If you are aware of that and don't want it to bother you, then you can try:
import numpy as np
np.seterr(divide='ignore', invalid='ignore')
For more details see:
http://docs.scipy.org/doc/numpy/reference/generated/numpy....
read file from assets
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Here is what I do in an activity for buffered reading extend/modify to match your needs
BufferedReader reader = null;
try {
reader = new BufferedReader(
new InputStreamReader(getAssets().open("filename.txt")));
// do reading, usually loop until end of file reading
...