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Is it secure to store passwords as environment variables (rather than as plain text) in config files

...it of php), and one of the things that I started doing in some of them is storing database and other passwords as environment variables rather than plain text in certain config files (or in settings.py, for django apps). ...
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UIGestureRecognizer on UIImageView

I have a UIImageView , which I want to be able to resize and rotate etc. 8 Answers 8 ...
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Learning WebGL and three.js [closed]

I'm new and starting to learn about 3D computer graphics in web browsers. I'm interested in making 3D games in a browser. For anyone who has learned both WebGL and three.js... ...
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How to check if an object is nullable?

How do I check if a given object is nullable in other words how to implement the following method... 14 Answers ...
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What is the JavaScript >>> operator and how do you use it?

I was looking at code from Mozilla that add a filter method to Array and it had a line of code that confused me. 7 Answers ...
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Do AJAX requests retain PHP Session info?

If I had a user logged onto my site, having his id stored in $_SESSION , and from his browser he clicked a 'Save' button which would make an AJAX request to the server. Will his $_SESSION and cookies be retained in this request, and can I safely rely on the id being present in the $_SESSION ? ...
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When to use thread pool in C#? [closed]

I have been trying to learn multi-threaded programming in C# and I am confused about when it is best to use a thread pool vs. create my own threads. One book recommends using a thread pool for small tasks only (whatever that means), but I can't seem to find any real guidelines. What are some consid...
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IBOutlet and IBAction

... IBAction and IBOutlet are macros defined to denote variables and methods that can be referred to in Interface Builder. IBAction resolves to void and IBOutlet resolves to nothing, but they signify to Xcode and Interface builder that these variables and methods can b...
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How do I add a foreign key to an existing SQLite table?

... You can't. Although the SQL-92 syntax to add a foreign key to your table would be as follows: ALTER TABLE child ADD CONSTRAINT fk_child_parent FOREIGN KEY (parent_id) REFERENCES parent(id); SQLite doesn't support the ADD CO...
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Storing money in a decimal column - what precision and scale?

I'm using a decimal column to store money values on a database, and today I was wondering what precision and scale to use. ...