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Why is __init__() always called after __new__()?
...e introduced some functionality in the same style as the flyweight design pattern .
18 Answers
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How can I send an email by Java application using GMail, Yahoo, or Hotmail?
Is it possible to send an email from my Java application using a GMail account? I have configured my company mail server with Java app to send email, but that's not going to cut it when I distribute the application. Answers with any of using Hotmail, Yahoo or GMail are acceptable.
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How do I show an open file in eclipse Package Explorer?
When a file (.java for example) is open in Eclipse, how do I get the Package Explorer to show the file that I am working on?
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How to properly reuse connection to Mongodb across NodeJs application and modules
...t way to share the same database (MongoDb) connection across whole NodeJs app. As I understand connection should be open when app starts and reused between modules. My current idea of the best way is that server.js (main file where everything starts) connects to database and creates object variabl...
How do I find if a string starts with another string in Ruby?
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puts 'abcdefg'.start_with?('abc') #=> true
[edit] This is something I didn't know before this question: start_with takes multiple arguments.
'abcdefg'.start_with?( 'xyz', 'opq', 'ab')
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How to find duplicates in 2 columns not 1
...table with two columns that interest me. Individually they can each have duplicates, but they should never have a duplicate of BOTH of them having the same value.
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“find: paths must precede expression:” How do I specify a recursive search that also finds files in
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Try putting it in quotes -- you're running into the shell's wildcard expansion, so what you're acually passing to find will look like:
find . -name bobtest.c cattest.c snowtest.c
...causing the syntax error. So try this instea...
How can I replace a newline (\n) using sed?
How can I replace a newline (" \n ") with a space (" ") using the sed command?
42 Answers
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Detect URLs in text with JavaScript
...e, here and here:
...almost anything is a valid URL. There
are some punctuation rules for
splitting it up. Absent any
punctuation, you still have a valid
URL.
Check the RFC carefully and see if you
can construct an "invalid" URL. The
rules are very flexible.
For exampl...
What's the difference between django OneToOneField and ForeignKey?
...Definitive Guide to Django:
OneToOneField
A one-to-one relationship. Conceptually, this is similar to a ForeignKey with unique=True, but the "reverse" side of the relation will directly return a single object.
In contrast to the OneToOneField "reverse" relation, a ForeignKey "reverse" rel...