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How do I get the coordinates of a mouse click on a canvas element?

What's the simplest way to add a click event handler to a canvas element that will return the x and y coordinates of the click (relative to the canvas element)? ...
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Codeigniter - no input file specified

I am a beginner in Codeigniter and I saw a CI tutorial and was just trying to do a simple thing. I downloaded the CI and added this file to controller directory, but it won't work. ...
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When do I need to use a semicolon vs a slash in Oracle SQL?

...nits" of work (creating a PL/SQL object, running a PL/SQL anonymous block, and executing a DML statement) can be picked out more easily by eye. Also, if you eventually move to something like Ant for deployment it will simplify the definition of targets to have a consistent statement delimiter. ...
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Why do Python's math.ceil() and math.floor() operations return floats instead of integers?

...n's integers are now arbitrary precision, it wasn't always this way. The standard library functions are thin wrappers around the equivalent C library functions. share | improve this answer ...
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Can I delete a git commit but keep the changes?

... changes on my development branch with a commit message "temporary commit" and then checkout master for the demo. 11 Answer...
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How to make ruler always be shown in Sublime text 2?

I use Sublime Text 2 and want a Ruler to be shown in every file with specific line-height. But I have to show it manually in every file. ...
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Singleton pattern in nodejs - is it needed?

... This has basically to do with nodejs caching. Plain and simple. https://nodejs.org/api/modules.html#modules_caching (v 6.3.1) Caching Modules are cached after the first time they are loaded. This means (among other things) that every call to require('foo') will ge...
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Flexbox and Internet Explorer 11 (display:flex in ?)

I am planning to move away from "floaty" layouts and use CSS flexbox for future projects. I was delighted to see that all major browsers in their current versions seem to support (in one way or another) flexbox. ...
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Tab Vs Space preferences in Vim

...very accommodating when it comes to tab Vs. space preferences. As I understand it, the tabstop setting indicates the width of a tab character. The shiftwidth setting specifies how many columns to increment/decrement when using the << and >> commands, whereas the softtabstop set...
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What's so great about Lisp? [closed]

...ng Lisp demonstrates developer enlightenment. I've heard of 3 weaknesses (and their counter-arguments): Dynamic typing. There's an argument for statically typed languages out there revolving around giving the compiler enough information to catch a certain class of errors so they don't happen at...