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What is the difference between object keys with quotes and without quotes?
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getSupportActionBar from inside of Fragment ActionBarCompat
I'm starting a new project that uses the AppCompat/ActionBarCompat in v7 support library. I'm trying to figure out how to use the getSupportActionBar from within a fragment. My activity that hosts the fragment extends ActionBarActivity , but I don't see a similar support class for Fragments.
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java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist
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How to delete a word and go into insert mode in Vim?
..." by typing "ciw" to delete a word your cursor is on.
The "inner" and "a" commands are great in Vim, also try "ci{" inside a {} block, or "ca{" if you also wish to remove the {} characters too. To translate these commands to English to remember them better, try: "change inner { block" and "change ...
Cross field validation with Hibernate Validator (JSR 303)
...ws the error message to be specified per match.
For example, validating a common form:
@FieldMatch.List({
@FieldMatch(first = "password", second = "confirmPassword", message = "The password fields must match"),
@FieldMatch(first = "email", second = "confirmEmail", message = "The ...
Web-scraping JavaScript page with Python
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dryscape isn't maintained anymore and the library dryscape developers recommend is Python 2 only. I have found using Selenium's python library with Phantom JS as a web driver fast enough and easy to get the work done.
Once you have installed Phantom JS, make sure the phantomjs binary is availabl...
How to specify a multi-line shell variable?
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set -e exits the shell if a command has an "unanticipated" non-zero exit status. By "unanticipated", I mean it runs in a context where you aren't specifically looking at its exit status. false by itself, for instance, would exit the shell. false || true...
Pandas dataframe get first row of each group
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How to prevent browser page caching in Rails
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Finally figured this out - http://blog.serendeputy.com/posts/how-to-prevent-browsers-from-caching-a-page-in-rails/ in application_controller.rb
After Rails 5:
class ApplicationController < ActionController::Base
before_action :set_cache_headers
private
def set_c...