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Finding the max value of an attribute in an array of objects
...nput in a array):
var maxA = a.reduce((a,b)=>a.y>b.y?a:b).y; // 30 chars time complexity: O(n)
var maxB = a.sort((a,b)=>b.y-a.y)[0].y; // 27 chars time complexity: O(nlogn)
var maxC = Math.max(...a.map(o=>o.y)); // 26 chars time complexity: >O(2n)
editable example her...
WebDriver: check if an element exists? [duplicate]
...t browser instance</param>
/// <param name="by">The search string for finding element</param>
/// <returns>Returns element or null if not found</returns>
public static IWebElement FindElementSafe(this IWebDriver driver, By by)
{
try
{
...
how to implement regions/code collapse in javascript
...extSelection = DTE.ActiveDocument.Selection
Const REGION_START As String = "//#region"
Const REGION_END As String = "//#endregion"
selection.SelectAll()
Dim text As String = selection.Text
selection.StartOfDocument(True)
Dim startIndex As Integer
...
How do I use a custom deleter with a std::unique_ptr member?
...uplicator's approach, which has the same advantages (inlining deletion, no extra storage on each unique_ptr, no need to provide an instance of the deleter when constructing), and adds the benefit of being able to use std::unique_ptr<Bar> anywhere without needing to remember to use the special ...
case-insensitive list sorting, without lowercasing the result?
I have a list of strings like this:
8 Answers
8
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What's the recommended approach to resetting migration history using Django South?
...t a longer variant of manage.py convert_to_south my_app, but I prefer that extra control, in such delicate situation as modifying the production database.
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Complete Working Sample of the Gmail Three-Fragment Animation Scenario?
...uickly and repeated then whole Layout drifted to right. It started showing extra space column on left. This behavior introduced because I wouldn't let the first animation (started by tap on middle ListView) complete and pressed the back button. I fixed it by replacing translationXBy with translation...
What is two way binding?
... emberjs, to create two way binding is by creating a new property with the string Binding at the end, then specifying a path from the global scope:
App.wife = Ember.Object.create({
householdIncome: 80000
});
App.husband = Ember.Object.create({
householdIncomeBinding: 'App.wife.householdIncome'...
How to free memory in Java?
...emory you may want to consider.
For example, say you'd declared a List<String> at the beginning of a method which grew in size to be very large, but was only required until half-way through the method. You could at this point set the List reference to null to allow the garbage collector to p...
Are tuples more efficient than lists in Python?
...s are incorporated directly in a tuple object. In contrast, lists have an extra layer of indirection to an external array of pointers.
This gives tuples a small speed advantage for indexed lookups and unpacking:
$ python3.6 -m timeit -s 'a = (10, 20, 30)' 'a[1]'
10000000 loops, best of 3: 0.0304 ...