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How do I count the number of occurrences of a char in a String?

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How to display a confirmation dialog when clicking an link?

I want this link to have a JavaScript dialog that asks the user “ Are you sure? Y/N ”. 9 Answers ...
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DateTime.ToString(“MM/dd/yyyy HH:mm:ss.fff”) resulted in something like “09/14/2013 07.20.31.371”

I have a WP8 app, which will send the current time to a web service. 6 Answers 6 ...
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Create objective-c class instance by name?

Is it possible to create an instance of a class by name? Something like: 4 Answers 4 ...
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Why should text files end with a newline?

I assume everyone here is familiar with the adage that all text files should end with a newline. I've known of this "rule" for years but I've always wondered — why? ...
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Open file via SSH and Sudo with Emacs

I want to open a file inside Emacs which is located on a remote server, with sudo powers on the server. I can open local files with sudo via Tramp like this: ...
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Display image as grayscale using matplotlib

I'm trying to display a grayscale image using matplotlib.pyplot.imshow() . My problem is that the grayscale image is displayed as a colormap. I need the grayscale because I want to draw on top of the image with color. ...
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Is it a good practice to place C++ definitions in header files?

My personal style with C++ has always to put class declarations in an include file, and definitions in a .cpp file, very much like stipulated in Loki's answer to C++ Header Files, Code Separation . Admittedly, part of the reason I like this style probably has to do with all the years I spent coding...
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How to remove the lines which appear on file B from another file A?

I have a large file A (consisting of emails), one line for each mail. I also have another file B that contains another set of mails. ...
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How to run Node.js as a background process and never die?

I connect to the linux server via putty SSH. I tried to run it as a background process like this: 14 Answers ...