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How to calculate a logistic sigmoid function in Python?
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Using math.exp with numpy array can yield some errors, like: TypeError: only length-1 arrays can be converted to Python scalars. To avoid it you should use numpy.exp.
– ViniciusArruda
Nov 23 '17 at 13:41
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How to get the first element of an array?
How do you get the first element from an array like this:
31 Answers
31
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Examples of Algorithms which has O(1), O(n log n) and O(log n) complexities
...ty as given in the question, here is a small list -
O(1) time
Accessing Array Index (int a = ARR[5];)
Inserting a node in Linked List
Pushing and Poping on Stack
Insertion and Removal from Queue
Finding out the parent or left/right child of a node in a tree stored in Array
Jumping to Next/Previou...
initializer_list and move semantics
...surprised by this, as I'd thought that initializer_list existed to keep an array of temporaries until they were move'd.
begin and end for initializer_list return const T *, so the result of move in your code is T const && — an immutable rvalue reference. Such an expression can't meaningfu...
ArrayList vs List in C#
What is the difference between ArrayList and List<> in C#?
12 Answers
12
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how to split the ng-repeat data with three columns using bootstrap
... inputs within the ng-repeat, you will probably want to unchunk/rejoin the arrays as the data is modified or on submission. Here's how this would look in a $watch, so that the data is always available in the original, merged format:
$scope.$watch('chunkedData', function(val) {
$scope.data = [].co...
How can I get query string values in JavaScript?
...essary, one single function to split up the parameters into an associative-array style object is enough. If you're not working with the HTML 5 History API, this is only necessary once per page load. The other suggestions here also fail to decode the URL correctly.
var urlParams;
(window.onpopstate...
How to add a string to a string[] array? There's no .Add function
I'd like to convert the FI.Name to a string and then add it to my array. How can I do this?
13 Answers
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How do I correctly clone a JavaScript object?
...up compromising by assuming that I would only need to copy a plain Object, Array, Date, String, Number, or Boolean. The last 3 types are immutable, so I could perform a shallow copy and not worry about it changing. I further assumed that any elements contained in Object or Array would also be one of...
JPQL IN clause: Java-Arrays (or Lists, Sets…)?
...uery q = em.createQuery(qlString, Item.class);
List<String> names = Arrays.asList("foo", "bar");
q.setParameter("names", names);
List<Item> actual = q.getResultList();
assertNotNull(actual);
assertEquals(2, actual.size());
Tested with EclipseLInk. With Hibernate 3.5.1, you'll need t...