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What does a . in an import statement in Python mean?
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That's the new syntax for explicit relative imports. It means import from the current package.
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How can you hide database output in Rails console?
In newer version of Rails, I'm guessing from 3 up, database queries are output to the console. This is useful most of the time, but how can you hide it when you do not want to see it?
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Travel/Hotel API's? [closed]
...ever, they do not immediately allow you to use their API even for testing. From their answer:
"Apologies for the inconvenience caused, but it’s simply a business decision to limit access to our rich hotel content. Please kindly check back within the next 2-3 months, where we will be able to judge...
Static Vs. Dynamic Binding in Java
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From Javarevisited blog post:
Here are a few important differences between static and dynamic binding:
Static binding in Java occurs during compile time while dynamic binding occurs during runtime.
private, fi...
How can jQuery deferred be used?
...se I can think of is in caching AJAX responses. Here's a modified example from Rebecca Murphey's intro post on the topic:
var cache = {};
function getData( val ){
// return either the cached value or jqXHR object wrapped Promise
return $.when(
cache[ val ] ||
$.ajax('/fo...
How do you add a timer to a C# console application
...ctor to do some thing like that.
We can see this modification in the code from the same book CLR Via C# Third Ed.
using System;
using System.Threading;
public static class Program {
public static void Main() {
// Create a Timer object that knows to call our TimerCallback
// method...
Is there a way to get the git root directory in one command?
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How can I use this from within a git hook? Specifically, I'm doing a post-merge hook and I need to get the actual root directory of the local git repo.
– Derek
Jul 31 '13 at 16:52
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Set style for TextView programmatically
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use the method from the support library, TextViewCompat.setTextAppearance
– Rubin Yoo
Dec 2 '16 at 20:29
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Adding :default => true to boolean in existing Rails column
...m not sure when this was written, but currently to add or remove a default from a column in a migration, you can use the following:
change_column_null :products, :name, false
Rails 5:
change_column_default :products, :approved, from: true, to: false
http://edgeguides.rubyonrails.org/active_rec...
What is the difference between an int and an Integer in Java and C#?
...ce (or more accurately have references passed by value), and are allocated from the heap. Conversely, primitives are immutable types that are passed by value and are often allocated from the stack.
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