:text will fail for a input with a type value of hidden. It’s also much more efficient to just use: ID attributes should be unique on a web page, make sure yours are as this may contribute to any problems you’re having, and specifying a more complicated selector just slows things down and doesn’t look … Read more
With commons/lang you can do this using StringUtils.join: You can’t really beat that for brevity. Update: Re-reading this answer, I would prefer the other answer regarding Guava’s Joiner now. In fact, these days I don’t go near apache commons. Another Update: Java 8 introduced the method String.join() While this isn’t as flexible as the Guava version, it’s handy when … Read more
A set is an unordered data structure, so it does not preserve the insertion order. This depends on your requirements. If you have an normal list, and want to remove some set of elements while preserving the order of the list, you can do this with a list comprehension:>>> a = [1, 2, 20, 6, 210] >>> … Read more
A Set represents a generic “set of values”. A TreeSet is a set where the elements are sorted (and thus ordered), a HashSet is a set where the elements are not sorted or ordered. A HashSet is typically a lot faster than a TreeSet. A TreeSet is typically implemented as a red-black tree (See http://en.wikipedia.org/wiki/Red-black_tree – I’ve not validated the actual implementation of sun/oracle’s TreeSet), whereas a HashSet uses Object.hashCode() to create an index in … Read more
To get elements which are in temp1 but not in temp2 : Beware that it is asymmetric : where you might expect/want it to equal set([1, 3]). If you do want set([1, 3]) as your answer, you can use set([1, 2]).symmetric_difference(set([2, 3])).
Turn sets into lists before serializing, or use a custom default handler to do so:
The simplest one-line solution is this: The above solution is destructive, meaning that contents of the original set1 my change.If you don’t want to touch your existing sets, create a new set:
For lists, we use the Collections.sort(List) method. What if we want to sort a HashSet?
All you have to do to combine them is Sets are unordered sequences of unique values. a | b or a.union(b) is the union of the two sets (a new set with all values found in either set). This is a class of operation called a “set operation”, which Python sets provide convenient tools for.
Besides calling omp_get_num_threads() outside of the parallel region in your case, calling omp_set_num_threads() still doesn’t guarantee that the OpenMP runtime will use exactly the specified number of threads. omp_set_num_threads() is used to override the value of the environment variable OMP_NUM_THREADS and they both control the upper limit of the size of the thread team that … Read more