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What do people find difficult about C pointers? [closed]
... here, it's clear that people have some pretty fundemental issues when getting their heads around pointers and pointer arithmetic.
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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
I have a table with existing data. Is there a way to add a primary key without deleting and re-creating the table?
4 Answer...
Add a reference column migration in Rails 4
...tionship between them.
All you need to do is: just generate a migration using the following command:
rails g migration AddUserToUploads user:references
Which will create a migration file as:
class AddUserToUploads < ActiveRecord::Migration
def change
add_reference :uploads, :user, inde...
What underlies this JavaScript idiom: var self = this?
I saw the following in the source for WebKit HTML 5 SQL Storage Notes Demo :
10 Answers
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Android - Setting a Timeout for an AsyncTask?
....get()
myDownloader.get(30000, TimeUnit.MILLISECONDS);
Note that by calling this in main thread (AKA. UI thread) will block execution, You probably need call it in a separate thread.
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What are the key differences between Scala and Groovy? [closed]
On the surface Groovy and Scala look pretty similar, aside from Scala being statically typed, and Groovy dynamic.
6 Answers...
Differences between Proxy and Decorator Pattern
...an object, whereas a proxy controls access to an object.
Proxies vary in the degree to which they are implemented like a decorator. A
protection proxy might be implemented exactly like a decorator. On the other
hand, a remote proxy will not contain a direct reference to its real subject but...
How can I comment a single line in XML?
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No, there is no way to comment a line in XML and have the comment end automatically on a linebreak.
XML has only one definition for a comment:
'<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
XML forbids -- in comments to maintain compatibility wit...
Mock functions in Go
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Personally, I don't use gomock (or any mocking framework for that matter; mocking in Go is very easy without it). I would either pass a dependency to the downloader() function as a parameter, or I would make downloader() a method on a type, and the type can hold the g...
How can I find the length of a number?
I'm looking to get the length of a number in JavaScript or jQuery?
13 Answers
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