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Concatenating two std::vectors
... I'd only add code to first get the number of elements each vector holds, and set vector1 to be the one holding the greatest. Should you do otherwise you're doing a lot of unnecessary copying.
– Joe Pineda
Oct 14 '08 at 16:11
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Dynamically creating keys in a JavaScript associative array
...rk well, are overcomplicated:
They use new Array(), which is an overkill (and an overhead) for a simple associative array (AKA dictionary).
The better ones use new Object(). It works fine, but why all this extra typing?
This question is tagged "beginner", so let's make it simple.
The über-simple ...
Changing element style attribute dynamically using JavaScript
... work just fine.
However, the thing you need to remember for padding-top, and for any hyphenated attribute name, is that in javascript, you remove the hyphen, and make the next letter uppercase, so in your case that'd be paddingTop.
There are some other exceptions. JavaScript has some reserved wor...
How to code a BAT file to always run as admin mode?
...se the quotes even if they are not needed, though.
– Andriy M
Jul 25 '11 at 4:38
18
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Binary search (bisection) in Python
Is there a library function that performs binary search on a list/tuple and return the position of the item if found and 'False' (-1, None, etc.) if not?
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How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
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Auto expand a textarea using jQuery
How can I make a textarea automatically expand using jQuery?
31 Answers
31
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Generate random numbers with a given (numerical) distribution
... You can then use the rvs() method of the distribution object to generate random numbers.
As pointed out by Eugene Pakhomov in the comments, you can also pass a p keyword parameter to numpy.random.choice(), e.g.
numpy.random.choice(numpy.arange(1, 7), p=[0.1, 0.05, 0.05, 0.2, 0.4, 0.2])
If you a...
Checking if a string is empty or null in Java [duplicate]
...ge Apache Commons StringUtils.isEmpty(str), which checks for empty strings and handles null gracefully.
Example:
System.out.println(StringUtils.isEmpty("")); // true
System.out.println(StringUtils.isEmpty(null)); // true
Google Guava also provides a similar, probably easier-to-read method: Stri...
Multiple submit buttons in an HTML form
Let's say you create a wizard in an HTML form. One button goes back, and one goes forward. Since the back button appears first in the markup when you press Enter , it will use that button to submit the form.
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