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How can I make a weak protocol reference in 'pure' Swift (without @objc)
...e sake of future viewers.
The purpose of using the weak keyword is to avoid strong reference cycles (retain cycles). Strong reference cycles happen when two class instances have strong references to each other. Their reference counts never go to zero so they never get deallocated.
You only need t...
ASP.NET MVC Razor: How to render a Razor Partial View's HTML inside the controller action
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Yes, this is how you render a partial view inside a view. But how to render it inside a controller action?
– Peter Stegnar
Dec 3 '10 at 12:42
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How to customize the background/border colors of a grouped table view cell?
...ne that needs it…
It's harder than it really should be. Here's how I did this when I had to do it:
You need to set the UITableViewCell's backgroundView property to a custom UIView that draws the border and background itself in the appropriate colors. This view needs to be able to draw the bord...
Why does Math.floor return a double?
...nteger as a double is the right thing to do here because it offers a much wider usefull number-range than a integer could.
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Will ConfigurationManager.AppSettings[“blah”] throw an exception if “blah” doesn't exist?
...wer to your question is No like @Tim mentioned. The page pointed to just said that if appsettings are not able to be loaded then an exception is thrown. But if a value is just not present in the appsettings then you will not get an exception. It really wouldn't make sense to throw an error just beca...
How to hide command output in Bash
I want to make my Bash scripts more elegant for the end user. How do I hide the output when Bash is executing commands?
7 A...
What does “@@ -1 +1 @@” mean in Git's diff output?
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It's a unified diff hunk identifier. This is documented by GNU Diffutils.
The unified output format starts with a two-line header, which looks like this:
--- from-file from-file-modification-time
+++ to-file to-file-modification-time
The ...
nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
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Why is Scala's immutable Set not covariant in its type?
... this is Russell's paradox: if anything can be a member of a set, then consider the Set R of sets which are not members of themselves. Then ask the question, is R a member of R?
– oxbow_lakes
Jan 11 '10 at 22:39
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Creating a zero-filled pandas data frame
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When I did it this way, I could not alter the "0" values. TypeError: 'numpy.float64' object does not support item assignment
– RightmireM
Jan 16 '18 at 12:48
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