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What is the difference between trie and radix trie data structures?
... a trie, on each edge you write a single letter, while in a PATRICIA tree (or radix tree) you store whole words.
Now, assume you have the words hello, hat and have. To store them in a trie, it would look like:
e - l - l - o
/
h - a - t
\
v - e
And you need nine nodes. I have p...
Android REST client, Sample?
...s thread has accepted answer, feel free to propose other ideas, you do use or like
7 Answers
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Better to 'try' something and catch the exception or test if it's possible first to avoid an excepti
Should I test if something is valid or just try to do it and catch the exception?
8 Answers
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Twig: in_array or similar possible within if statement?
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to
{% if myVar in someOtherArray|keys %}
in is the containment-operator and keys a filter that returns an arrays keys.
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scp or sftp copy multiple files with single command
I'd like to copy files from/to remote server in different directories.
For example, I want to run these 4 commands at once.
...
Should I use single or double colon notation for pseudo-elements?
Since IE7 and IE8 don't support the double-colon notation for pseudo-elements (e.g. ::after or ::first-letter ), and since modern browsers support the single-colon notation (e.g. :after ) for backwards compatibility, should I use solely the single-colon notation and when IE8's market share drops...
Difference between `set`, `setq`, and `setf` in Common Lisp?
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Originally, in Lisp, there were no lexical variables -- only dynamic ones. And
there was no SETQ or SETF, just the SET function.
What is now written as:
(setf (symbol-value '*foo*) 42)
was written as:
(set (quote *foo*) ...
Move an item inside a list?
...tem already in a list with the insert/pop method will have different behavior depending if you're moving towards front or back of the list. Moving to the left you insert before the object you've chosen. Moving to the back you insert after the item you've chosen. Check for moving to the end of the...
Fastest way to check if a string matches a regexp in ruby?
...ch?:
pattern.match?(string)
Regexp#match? is explicitly listed as a performance enhancement in the release notes for 2.4.0, as it avoids object allocations performed by other methods such as Regexp#match and =~:
Regexp#match?
Added Regexp#match?, which executes a regexp match without creati...
Convert string with commas to array
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For simple array members like that, you can use JSON.parse.
var array = JSON.parse("[" + string + "]");
This gives you an Array of numbers.
[0, 1]
If you use .split(), you'll end up with an Array of strings.
["0", "1"...