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What is the difference between Gemfile and Gemfile.lock in Ruby on Rails
...ecify which versions.
The Gemfile.lock file is where Bundler records the exact versions that were installed. This way, when the same library/project is loaded on another machine, running bundle install will look at the Gemfile.lock and install the exact same versions, rather than just using the Gem...
demystify Flask app.secret_key
.... For just Flask itself, that 'anything' is the Session object, but other extensions can make use of the same secret.
secret_key is merely the value set for the SECRET_KEY configuration key, or you can set it directly.
The Sessions section in the Quickstart has good, sane advice on what kind of se...
Who architected / designed C++'s IOStreams, and would it still be considered well-designed by today'
...d their way into the standard: auto_ptr, vector<bool>, valarray and export, just to name a few. So I wouldn't take the presence of IOStreams necessarily as a sign of quality design.
IOStreams have a checkered history. They are actually a reworking of an earlier streams library, but were autho...
string sanitizer for filename
...- how about using a whitelist of characters you are happy to be used? For example, you could allow just good ol' a-z, 0-9, _, and a single instance of a period (.). That's obviously more limiting than most filesystems, but should keep you safe.
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Modify request parameter with servlet filter
An existing web application is running on Tomcat 4.1. There is an XSS issue with a page, but I can't modify the source. I've decided to write a servlet filter to sanitize the parameter before it is seen by the page.
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textarea's rows, and cols attribute in CSS
I'd like to set the textarea 's rows and cols attributes via CSS.
5 Answers
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What is a Manifest in Scala and when do you need it?
...ich is a workaround for Java's type erasure. But how does Manifest work exactly and why / when do you need to use it?
4 A...
Why does z-index not work?
So if I understand z-index correctly, it would be perfect in this situation:
4 Answers
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$.ajax - dataType
...pe is the HTTP header sent to the server, specifying a particular format.
Example: I'm sending JSON or XML
dataType is you telling jQuery what kind of response to expect.
Expecting JSON, or XML, or HTML, etc. The default is for jQuery to try and figure it out.
The $.ajax() documentation has full d...
Good examples of MVVM Template
...ly working with the Microsoft MVVM template and find the lack of detailed examples frustrating. The included ContactBook example shows very little Command handling and the only other example I've found is from an MSDN Magazine article where the concepts are similar but uses a slightly different app...