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How can I combine hashes in Perl?
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Quick Answer (TL;DR)
%hash1 = (%hash1, %hash2)
## or else ...
@hash1{keys %hash2} = values %hash2;
## or with references ...
$hash_ref1 = { %$hash_ref1, %$hash_ref2 };
Overview
Context: Perl 5.x
Problem: The user wishes to merge two hashes1 into a single ...
Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
... find what the duplicated values are - I don't actually need their indexes or how many times they are duplicated.
84 Answer...
Cast Int to enum in Java
What is the correct way to cast an Int to an enum in Java given the following enum?
17 Answers
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How to set up a PostgreSQL database in Django
...to install psycopg2 Python library.
Installation
Download http://initd.org/psycopg/, then install it under Python PATH
After downloading, easily extract the tarball and:
$ python setup.py install
Or if you wish, install it by either easy_install or pip.
(I prefer to use pip over easy_instal...
Counting the Number of keywords in a dictionary in python
I have a list of words in a dictionary with the value = the repetition of the keyword but I only want a list of distinct words so I wanted to count the number of keywords. Is there a way to count the number of keywords or is there another way I should look for distinct words?
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Can you write nested functions in JavaScript?
I am wondering if JavaScript supports writing a function within another function, or nested functions (I read it in a blog). Is this really possible?. In fact, I have used these but am unsure of this concept. I am really unclear on this -- please help!
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How to open a file using the open with statement
...s in the file and appending text to the occurrences in the file. The code works. Could it be done better?
4 Answers
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How do you implement a class in C? [closed]
Assuming I have to use C (no C++ or object oriented compilers) and I don't have dynamic memory allocation, what are some techniques I can use to implement a class, or a good approximation of a class? Is it always a good idea to isolate the "class" to a separate file? Assume that we can preallocate t...
Any way to properly pretty-print ordered dictionaries?
I like the pprint module in Python. I use it a lot for testing and debugging. I frequently use the width option to make sure the output fits nicely within my terminal window.
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Detect the specific iPhone/iPod touch model [duplicate]
...ng to play a multiplayer on an iPod 1st gen and iPhone 2G I need to check for the specific device model.
6 Answers
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