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How to avoid “RuntimeError: dictionary changed size during iteration” error?
...ying the dict:
for i in d.keys():
Note that this doesn't work in Python 3.x because keys returns an iterator instead of a list.
Another way is to use list to force a copy of the keys to be made. This one also works in Python 3.x:
for i in list(d):
...
How to access array elements in a Django template?
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311
Remember that the dot notation in a Django template is used for four different notations in Py...
anchor jumping by using javascript
...e.net/DerekL/rEpPA/
Another one w/ transition: http://jsfiddle.net/DerekL/x3edvp4t/
You can also use .scrollIntoView:
document.getElementById(h).scrollIntoView(); //Even IE6 supports this
(Well I lied. It's not complicated at all.)
...
Tools for analyzing performance of a Haskell program
...our program with +RTS -s
$ time ./A +RTS -s
./A +RTS -s
749700
9,961,432,992 bytes allocated in the heap
2,463,072 bytes copied during GC
29,200 bytes maximum residency (1 sample(s))
187,336 bytes maximum slop
**2 MB** total memory in use (0 MB lost due ...
PHP validation/regex for URL
...)\[\]{},;"\':<]|\.\s|$)#i',
"'<a href=\"$1\" target=\"_blank\">$3</a>$4'",
$text
);
Most of the random junk at the end is to deal with situations like http://domain.com. in a sentence (to avoid matching the trailing period). I'm sure it could be cleaned up but since it worked. I...
How to check that a string is a palindrome using regular expressions?
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32 Answers
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Postgresql aggregate array
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163
Use array_agg: http://www.sqlfiddle.com/#!1/5099e/1
SELECT s.name, array_agg(g.Mark) as marks ...
Aligning a float:left div to center?
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3
Just in case anyone is struggling with the spaces that appear in between the elements, remove the the whitespace in your code by defining yo...
Fastest way to determine if an integer's square root is an integer
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35 Answers
35
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