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Gem::LoadError for mysql2 gem, but it's already in Gemfile
...s 4.1.5) try using this version of mysql2:
gem 'mysql2', '~> 0.3.18'
Apparently mysql2 isn't still compatible with newer version of rails because rails 4.2.4 is pretty new as the time of answering this question by me 8 September 2015 so use the above line in your Gem file and run:
bundle ins...
UDP vs TCP, how much faster is it? [closed]
... they all "sense" the available bandwidth. Try that with 100 different UDP applications, all pushing packets as fast as they can go, and see how well things work out for you.
On a larger scale, this TCP behavior is what keeps the Internet from locking up into "congestion collapse".
Things that te...
Iterating over Java collections in Scala
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There is a wrapper class (scala.collection.jcl.MutableIterator.Wrapper). So if you define
implicit def javaIteratorToScalaIterator[A](it : java.util.Iterator[A]) = new Wrapper(it)
then it will act as a sub class of the Scala iterator ...
How to make a transparent UIWebView
I have an app with a UITableView and a corresponding detail view for each row. In the detail view I have to display some text and a background image (text is different for each row, but the image remains the same). The easiest way, in my opinion, is to put the text in an .rtf file and display it i...
Relational table naming convention [closed]
...of the two parent table names.
Note that is such cases the Verb Phrase applies to, and is read as, from parent to parent, ignoring the child table, because its only purpose in life is to relate the two parents.
Diagram_C
If it is not an Associative Table (ie. in addition to the two PKs, it con...
git: How to ignore all present untracked files?
... don't have a .gitignore file yet your gitignore will ignore itself! This happens because the file .gitignore gets created before the git status --porcelain is executed. So if you don't have a .gitignore file yet I recommend using:
echo "$(git status --porcelain | grep '^??' | cut -c4-)" > .giti...
Fat models and skinny controllers sounds like creating God models [closed]
...ding a lot of blogs which advocate the fat models and skinny controllers approach, esp. the Rails camp. As a result the routers is basically just figuring out what method to call on what controller and all the controller method does is call the corresponding method on the model and then bring up t...
How to check postgres user and password? [closed]
...ow do you then access this with a URL string? For example, if you have an app that connects to your database, do you need to enter your username and password in the URL?
– Maiya
May 22 at 23:59
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How slow are .NET exceptions?
...ceptions where they're not logical. For instance, int.TryParse is entirely appropriate for converting data from a user. It's appropriate when reading a machine-generated file, where failure means "The file isn't in the format it's meant to be, I really don't want to try to handle this as I don't kno...
Does every web request send the browser cookies?
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Yes, you could orgnize your site/app structure such that all URLs requiring cookies are wthin /app/ or suchlike - it would retain portability without needing separate subdomains to eliminate redundant overhead. Or you could ditch the now useless Google Anal...