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How to randomly select an item from a list?
...y selects a single item
For reproducibility, you can do:
np.random.seed(123)
np.random.choice(foo) # first call will always return 'c'
For samples of one or more items, returned as an array, pass the size argument:
np.random.choice(foo, 5) # sample with replacement (default)
np.random...
How do I get my Python program to sleep for 50 milliseconds?
...oth as long as you have a Python implementation that is up to spec on your OS, the above is OS independent.
– Chris
Nov 21 '18 at 14:57
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How to get Chrome to allow mixed content?
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@kwill When I click on the shield icon and choose to run unsafe scripts, that still does not fix the issue. Are there any alternatives?
– Ivan Vegner
Feb 16 '16 at 0:44
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How do I format a number in Java?
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From this thread, there are different ways to do this:
double r = 5.1234;
System.out.println(r); // r is 5.1234
int decimalPlaces = 2;
BigDecimal bd = new BigDecimal(r);
// setScale is immutable
bd = bd.setScale(decimalPlaces, BigDecimal.ROUND_HALF_UP);
r = bd.doubleValue();
System.out.pri...
Android Calling JavaScript functions in WebView
...stead loadUrl to call the javascript functions like below
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
webView.evaluateJavascript("enable();", null);
} else {
webView.loadUrl("javascript:enable();");
}
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git pull error :error: remote ref is at but expected
...are running git under a file system that is not case sensitive (Windows or OS X) this will occur if there are two branches with the same name but different capitalisation, e.g. user_model_changes and User_model_changes as both of the remote branches will match the same tracking ref.
Delete the wron...
.htm vs .html ? Which file extension naming is more correct? [closed]
Which file extension should I choose for my HTML files? And why?
12 Answers
12
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Split string every nth character?
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>>> line = '1234567890'
>>> n = 2
>>> [line[i:i+n] for i in range(0, len(line), n)]
['12', '34', '56', '78', '90']
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C++, copy set to vector
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123
Just use the constructor for the vector that takes iterators:
std::set<T> s;
//...
st...
How is malloc() implemented internally? [duplicate]
...ran out of elements. This would be quite space efficient but would not be possible with every design. If you just get another bucket via sbrk/mmap that might be faster and even easier, but not as space efficient. Also, the design must of course take into account that "free" needs to make space avail...