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EF Code First: How do I see 'EntityValidationErrors' property from the nuget package console?
... class in the Seed method, and replaced calls to SaveChanges with calls to my function instead. This function would simply enumerate the errors within the EntityValidationErrors collection, and rethrow an exception where the Exception message lists the individual problems. This makes the output sh...
Difference between DateTime and Time in Ruby
...gorian calendar and has no concept of calendar reform […]." I will edit my answer to provide some more details.
– Niels Ganser
Jul 25 '18 at 15:12
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Left Align Cells in UICollectionView
I am using a UICollectionView in my project, where there are multiple cells of differing widths on a line. According to:
https://developer.apple.com/library/content/documentation/WindowsViews/Conceptual/CollectionViewPGforIOS/UsingtheFlowLayout/UsingtheFlowLayout.html
...
Is it possible to await an event instead of another async method?
In my C#/XAML metro app, there's a button which kicks off a long-running process. So, as recommended, I'm using async/await to make sure the UI thread doesn't get blocked:
...
git working on two branches simultaneously
...g Windows).
Again, once you have cloned a repo (in a folder like /path/to/myrepo), you can add worktrees for different branches in different independent paths (/path/to/br1, /path/to/br2), while having those working trees linked to the main repo history (no need to use a --git-dir option anymore)
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Simple and fast method to compare images for similarity
...med (scaled, rotated, skewed ...)? There are quite a few methods on top of my head that could possibly help you:
Simple euclidean distance as mentioned by @carlosdc (doesn't work with transformed images and you need a threshold).
(Normalized) Cross Correlation - a simple metrics which you can use ...
Is errno thread-safe?
In errno.h , this variable is declared as extern int errno; so my question is, is it safe to check errno value after some calls or use perror() in multi-threaded code. Is this a thread safe variable? If not, then whats the alternative ?
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Which is the best library for XML parsing in java [closed]
...ache projects on XML seems under hibernation. I haven't evaluated dom4j by myself but just wanted to know - Does java has other (Good) open source xml parsing libraries? and how's your experience with dom4j?
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Using a dispatch_once singleton model in Swift
... the nested struct approach if you need to support earlier versions.
From my experience with Swift there are three approaches to implement the Singleton pattern that support lazy initialization and thread safety.
Class constant
class Singleton {
static let sharedInstance = Singleton()
}
Thi...
When would anyone use a union? Is it a remnant from the C-only days?
...o use them. When would unions be useful in a modern (or even legacy) case? My only two guesses would be programming microprocessors when you have very limited space to work with, or when you're developing an API (or something similar) and you want to force the end user to have only one instance of s...