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Unique (non-repeating) random numbers in O(1)?
I'd like to generate unique random numbers between 0 and 1000 that never repeat (i.e. 6 doesn't show up twice), but that doesn't resort to something like an O(N) search of previous values to do it. Is this possible?
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How to use jQuery in chrome extension?
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128
You have to add your jquery script to your chrome-extension project and to the background sect...
How to convert a string to integer in C?
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12 Answers
12
Active
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How do I profile memory usage in Python?
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123
This one has been answered already here: Python memory profiler
Basically you do something li...
How to initialize array to 0 in C?
... are automatically initialized to zero. If you have simply
char ZEROARRAY[1024];
at global scope it will be all zeros at runtime. But actually there is a shorthand syntax if you had a local array. If an array is partially initialized, elements that are not initialized receive the value 0 of the a...
The order of keys in dictionaries
...edDict (requires Python 2.7) or higher.
Also, note that OrderedDict({'a': 1, 'b':2, 'c':3}) won't work since the dict you create with {...} has already forgotten the order of the elements. Instead, you want to use OrderedDict([('a', 1), ('b', 2), ('c', 3)]).
As mentioned in the documentation, for ...
How can I check if a URL exists via PHP?
...ders = @get_headers($file);
if(!$file_headers || $file_headers[0] == 'HTTP/1.1 404 Not Found') {
$exists = false;
}
else {
$exists = true;
}
From here and right below the above post, there's a curl solution:
function url_exists($url) {
return curl_init($url) !== false;
}
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Python - Create list with numbers between 2 values?
...es I put in?
For example, the following list is generated for values from 11 to 16:
11 Answers
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mysql :: insert into table, data from another table?
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answered Nov 22 '10 at 2:04
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Is it possible for a unit test to assert that a method calls sys.exit()
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155
Yes. sys.exit raises SystemExit, so you can check it with assertRaises:
with self.assertRaise...