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Laravel Eloquent ORM Transactions
...d;
$question->description = $description;
$question->time_post = date('Y-m-d H:i:s');
if(Input::has('expiredtime'))
$question->expired_time = Input::get('expiredtime');
$questionCategory->category_id = $category;
$questionCategory->...
Remove duplicates from a List in C#
...HashSet is great in most circumstances. But if you have an object like DateTime, it compares by reference and not by value, so you will still end up with duplicates.
– Jason McKindly
Dec 9 '15 at 20:03
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What are major differences between C# and Java?
...are completely different between the two; Java generics are just a compile-time "trick" (but a useful one at that). In C# and .NET generics are maintained at execution time too, and work for value types as well as reference types, keeping the appropriate efficiency (e.g. a List<byte> as a byte...
MySQL Creating tables with Foreign Keys giving errno: 150
...EIGN_KEY_CHECKS = 0; during an import/alteration that was malformed at one time or another. Big help, thanks.
– oucil
Apr 7 '19 at 15:51
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Android Split string
... for this! Also useful for separating hour and minute when creating a new Time object.
– worked
Sep 28 '11 at 12:24
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What is a plain English explanation of “Big O” notation?
...ales with n-squared, this is O(n2) or quadratic complexity. This is a good time to introduce another important concept:
We only care about the most significant portion of complexity.
The astute may have realized that we could express the number of operations as: n2 + 2n. But as you saw from our exa...
Replacing a char at a given index in string? [duplicate]
...ried with a little benchmark on 100k iterations, ToCharArray is at least 2 time faster.
– Matteo Migliore
May 13 '13 at 8:55
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Why must a lambda expression be cast when supplied as a plain Delegate parameter
...
Nine tenths of the time people get this because they are trying to marshal onto the UI thread. Here's the lazy way:
static void UI(Action action)
{
System.Windows.Threading.Dispatcher.CurrentDispatcher.BeginInvoke(action);
}
Now that it...
How to determine the longest increasing subsequence using dynamic programming?
... S, which is >= than X, and change it to X.
Because S is sorted at any time, the element can be found using binary search in log(N).
Total runtime - N integers and a binary search for each of them - N * log(N) = O(N log N)
Now let's do a real example:
Collection of integers:
2 6 3 4 1 2 9 5 ...
How can I use interface as a C# generic type constraint?
...thing that couldn't be done without it, save for the generation of compile-time squawks when attempts are made to do things that could otherwise fail at runtime.
– supercat
Apr 23 '17 at 20:58
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