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RSpec: describe, context, feature, scenario?
...ike this:
#
# The feature/behaviour I'm currently testing
#
describe "item ordering" do
# 1st state of the feature/behaviour I'm testing
context "without a order param" do
...
end
# 2nd state of the feature/behaviour I'm testing
context "with a given order column" do
..
end
...
A fast method to round a double to a 32-bit int explained
...o bad, but on later processors that started to get super-scalar and out-of-order execution, altering the fp rounding mode generally seriales the CPU core and is quite expensive. So on a CPU like a Pentium-III or Pentium-IV, this overall cost is quite high -- a normal fp->int conversion is 10x or...
Best way of invoking getter by reflection
...
Is there a way to invoke the methods in the order in which the fields are listed in the Java file?
– LifeAndHope
Jun 21 '15 at 19:37
...
Explanation of JSONB introduced by PostgreSQL
...is if for legacy reasons your code consuming your json is dependent on the ordering of the json fields and they can't be reordered.
– djdrzzy
Aug 15 '16 at 20:35
4
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How to get the top 10 values in postgresql?
...
For this you can use limit
select *
from scores
order by score desc
limit 10
If performance is important (when is it not ;-) look for an index on score.
Starting with version 8.4, you can also use the standard (SQL:2008) fetch first
select *
from scores
order by scor...
What is the standard naming convention for html/css ids and classes?
...at describe the object can also fall into four categories (which should be ordered from left to right):
Object, Object-Descriptor, Action, and Action-Descriptor.
car - a noun, and an object
new - an adjective, and an object-descriptor that describes the object in more detail
turned - a verb,...
Grab a segment of an array in Java without creating a new array on heap
...rious primitive types and helps manage slicing, position, conversion, byte ordering, etc.
If your bytes originate from a Stream, the NIO Buffers can use "direct mode" which creates a buffer backed by native resources. This can improve performance in a lot of cases.
...
jQuery's .click - pass parameters to user function
... @phoffer: You would have to pass the element explicitly in order to use it, e.g.: function(){ add_event('shot', $(this));} and function add_event(event, element){...}. element would be a jQuery element here (it works with bind() though as Nick mentioned).
– Feli...
rails 3.1.0 ActionView::Template::Error (application.css isn't precompiled)
...same error in my development environment. In the end all I needed to do in order to fix it was to add:
config.assets.manifest = Rails.root.join("public/assets")
to my config/environments/development.rb file and it fixed it. My final config in development related to assets looks like:
config.asse...
How to fix 'sudo: no tty present and no askpass program specified' error?
...k for a password. For example in my system x11-ssh-askpass works fine.
In order to do that you have to specify what program to use, either with the environment variable SUDO_ASKPASS or in the sudo.conf file (see man sudo for details).
You can force sudo to use the askpass program by using the opti...