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Background image jumps when address bar hides iOS/Android/Mobile Chrome
...div to wrap the whole page caused other issues. Using an empty div with z-index: -1 as the background seemed to be the best solution combined with the above. I took out the mobile detection since doing this on the desktop doesn't hurt for my site. No math (which can guess the size of the tabs wro...
What's the difference between IEquatable and just overriding Object.Equals()?
...t you avoid a cast from System.Object which can make a difference if it's called frequently.
As noted on Jared Parson's blog though, you still must implement the Object overrides.
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How to execute a raw update sql with dynamic binding in rails
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It doesn't look like the Rails API exposes methods to do this generically. You could try accessing the underlying connection and using it's methods, e.g. for MySQL:
st = ActiveRecord::Base.connection.raw_connection.prepare("update table set f1=? where f2=? and f3=?")
st.execute(f1, f2, f3)
st...
Does deleting a branch in git remove it from the history?
...y each commit contains a complete tree. In the object database objects are indexed by id so objects are shared between all the objects (trees and commits) that reference them so the implied storage overhead isn't as bad as it initially sounds. git also has an efficient storage optimization (pack fil...
Why does comparing strings using either '==' or 'is' sometimes produce a different result?
...l reasons: it is
inherently O(n) in the length of the
strings; it typically requires reads
from several regions of memory, which
take time; and the reads fills up the
processor cache, meaning there is less
cache available for other needs. With
interned strings, a simple object
identi...
Select all text inside EditText when it gets focus
...
You can try in your main.xml file:
android:selectAllOnFocus="true"
Or, in Java, use
editText.setSelectAllOnFocus(true);
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Combine two ActiveRecord::Relation objects
...lation.or(last_name_relation)
† Only in ActiveRecord 5+; for 4.2 install the where-or backport.
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How does bash tab completion work?
...normal options can cover (e.g. different completions depending on argument index, or depending on previous arguments),
you can use -F function, which will then invoke a shell function to generate the list of possible completions.
(This is used for example for the git completion, which is very compli...
Wait for page load in Selenium
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does this really work all the time? Maybe Im missing something from your code but you are waiting for the dom to be in ready state. But consider that if your code executes too fast the previous page might not be unloaded yet and it will ...
Android - Package Name convention
...ou consider each period ('.') in the application name as a path separator, all applications from a publisher would sit together in the path hierarchy.
So, for instance, packages from Adobe would be of the form:
com.adobe.reader (Adobe Reader)
com.adobe.photoshop (Adobe Photoshop)
com.adobe.ideas ...