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Why am I getting error for apple-touch-icon-precomposed.png
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I guess apple devices make those requests if the device owner adds the site to it. This is the equivalent of the favicon. To resolve, add 2 100×100 png files, save it as apple-touch-icon-precomposed.png and apple-touch-icon.png and upload it to the root directory of the server. After that, the e...
How to randomize (or permute) a dataframe rowwise and columnwise?
... replace=FALSE (the default) to sample(...) ensures that sampling is done without replacement which accomplishes a row wise shuffle.
Shuffle column-wise:
> df3 <- df1[,sample(ncol(df1))]
> df3
c a b
1 0 1 1
2 0 1 0
3 0 0 1
4 0 0 0
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Tick symbol in HTML/XHTML
We need to display a tick symbol (✓ or ✔) within an internal web app and would ideally like to avoid using an image.
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PHP Array to CSV
I'm trying to convert an array of products into a CSV file, but it doesn't seem to be going to plan. The CSV file is one long line, here is my code:
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How to use JUnit to test asynchronous processes
How do you test methods that fire asynchronous processes with JUnit?
17 Answers
17
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How to validate a url in Python? (Malformed or not)
I have url from the user and I have to reply with the fetched HTML.
10 Answers
10
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Xcode debugging - displaying images
... Xcode debugger. You can take a look at a variable's value and even change it.
6 Answers
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How can I change the EditText text without triggering the Text Watcher?
I have an EditText field with a Customer Text Watcher on it. In a piece of code I need to change the value in the EditText which I do using .setText("whatever") .
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Using ConfigurationManager to load config from an arbitrary location
I'm developing a data access component that will be used in a website that contains a mix of classic ASP and ASP.NET pages, and need a good way to manage its configuration settings.
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Where does Console.WriteLine go in ASP.NET?
...le.Out and Console.Error are backed by Stream.Null (wrapped inside a TextWriter), which is a dummy implementation of Stream that basically ignores all input, and gives no output.
So it is conceptually equivalent to /dev/null, but the implementation is more streamlined: there's no actual I/O taking ...