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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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SHA1 vs md5 vs SHA256: which to use for a PHP login?
I'm making a php login, and I'm trying to decide whether to use SHA1 or Md5, or SHA256 which I read about in another stackoverflow article. Are any of them more secure than others? For SHA1/256, do I still use a salt?
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LISTAGG in Oracle to return distinct values
I am trying to use the LISTAGG function in Oracle. I would like to get only the distinct values for that column. Is there a way in which I can get only the distinct values without creating a function or a procedure?
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Multiple file upload in php
I want to upload multiple files and store them in a folder and get the path and store it in the database... Any good example you looked for doing multiple file upload...
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Manually map column names with class properties
I am new to the Dapper micro ORM. So far I am able to use it for simple ORM related stuff but I am not able to map the database column names with the class properties.
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How can I remove all objects but one from the workspace in R?
I have a workspace with lots of objects and I would like to remove all but one. Ideally I would like to avoid having to type rm(obj.1, obj.2... obj.n) . Is it possible to indicate remove all objects but these ones ?
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How do I paste multi-line bash codes into terminal and run it all at once?
I need to paste a multi-line bash code into terminal, but whenever I do, each line gets run as a separate command as soon as it gets pasted.
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How can I get form data with JavaScript/jQuery?
Is there a simple, one-line way to get the data of a form as it would be if it was to be submitted in the classic HTML-only way?
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What are the security risks of setting Access-Control-Allow-Origin?
I recently had to set Access-Control-Allow-Origin to * in order to be able to make cross-subdomain ajax calls.
Now I can't help but feel that I'm putting my environment to security risks.
Please help me if I'm doing it wrong.
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Is this a “good enough” random algorithm; why isn't it used if it's faster?
I made a class called QuickRandom , and its job is to produce random numbers quickly. It's really simple: just take the old value, multiply by a double , and take the decimal part.
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