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Why doesn't C# support the return of references?
...t c = ref Max(ref a, ref b);
c += 100;
Console.WriteLine(b); // 556!
I know empirically that it is possible to build a version of C# that supports these features because I have done so. Advanced programmers, particularly people porting unmanaged C++ code, often ask us for more C++-like ability to...
Why is using the rails default_scope often recommend against?
...WHERE "posts"."published" = 't'
Well this is pretty much what we expect. Now lets try:
2.1.1 :004 > Post.new
=> #<Post id: nil, title: nil, published: true, created_at: nil, updated_at: nil>
And there we have the first big problem with default scope:
=> default_scope will aff...
git stash apply version
...pretty easy, you can use the N stack number instead of using stash@{n}. So now instead of using:
git stash apply "stash@{n}"
You can type:
git stash apply n
To get list of stashes:
git stash list
In fact stash@{0} is a revision in git that you can switch to... but git stash apply ... should...
How is Python's List Implemented?
... list, an array? I searched around and only found people guessing. My C knowledge isn't good enough to look at the source code.
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How to vertically center content with variable height within a div?
... Then I noticed that most transform related stuff is -webkit- prefixed and now it works. So just as a reminder: Don't forget to add the -webkit- prefix too.
– miho
Mar 6 '15 at 19:20
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Is there any simple way to find out unused strings in Android project?
... As @FrankHarper said: it did not previously. As Lord Flash said, it does now: Warning: The resource R.string.... appears to be unused [UnusedResources] [lint] <string name="...">some text</string>
– serv-inc
Nov 4 '15 at 8:26
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How do I specify local .gem files in my Gemfile?
... Super trick! here is small addition for that. How to verify that gems are now available locally: gem list -r --clear-sources -s file:/repo
– Алексей Лещук
Oct 9 '19 at 14:50
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Make header and footer files to be included in multiple html pages
...l
<a href="http://www.google.com">click here for google</a>
Now, when you visit index.html, you should be able to click the link tags.
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What does Serializable mean?
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Thank you. I think I got it now.
– Sunburst275
Mar 20 at 14:54
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Check if property has attribute
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This can now be done without expression trees and extension methods in a type safe manner with the new C# feature nameof() like this:
Attribute.IsDefined(typeof(YourClass).GetProperty(nameof(YourClass.Id)), typeof(IsIdentity));
nam...