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Get file name and extension in Ruby
...m working on a program to download a video from YouTube, convert it to MP3 and create a directory structure for the files.
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JavaScript file upload size validation
...ed by some modern browsers, the File API. It can be used for this purpose, and it's easy to test whether it's supported and fall back (if necessary) to another mechanism if it isn't.
Here's a complete example:
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-type" conte...
Dynamically update values of a chartjs chart
I created an basic bar chart using chartjs and it works fine. Now I want to update the values on a time based interval. My problem is that after I created the chart, I do not know how to update its values correctly...
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Persistent invalid graphics state error when using ggplot2
I believe my dataframe is okay and my code is okay. In fact, I have eliminated parts of the dataframe and most of the graphing code to make things as basic as possible. But still, I get:
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How to capture UIView to UIImage without loss of quality on retina display
...ions (as documented on this page). Pass 0.0 for scale (the third argument) and you'll get a context with a scale factor equal to that of the screen.
UIGraphicsBeginImageContext uses a fixed scale factor of 1.0, so you're actually getting exactly the same image on an iPhone 4 as on the other iPhones...
What is a StoryBoard ID and how can i use this?
i'm new to IOS developing and recently started in Xcode 4.5. I saw for every viewController that i could set some identity variables including the storyboard ID. What is this and how can i use it?
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What is the difference between a dialog being dismissed or canceled in Android?
...ys, what is the difference between a dialog being dismissed or canceled in Android?
4 Answers
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Removing colors from output
I have some script that produces output with colors and I need to remove the ANSI codes.
13 Answers
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Center/Set Zoom of Map to cover all visible Markers?
I am setting multiple markers on my map and I can set statically the zoom levels and the center but what I want is, to cover all the markers and zoom as much as possible having all markets visible
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How do I check for a network connection?
... This doesn't always work in WPF. Some laptops return false and some return true
– krilovich
Feb 10 '16 at 17:21
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