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How to sort in-place using the merge sort algorithm?
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Knuth left this as an exercise (Vol 3, 5.2.5). There do exist in-place merge sorts. They must be...
How to change a command line argument in Bash?
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2 Answers
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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...
Correct owner/group/permissions for Apache 2 site files/folders under Mac OS X?
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answered Jun 21 '11 at 2:22
dkaminsdkamins
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Repeat String - Javascript
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edited Jun 7 '15 at 17:24
answered Oct 14 '08 at 20:17
P...
Check if multiple strings exist in another string
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edited Apr 29 at 0:34
rjurney
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What is the difference between JOIN and UNION?
...mpletely different operations. Trivial example of UNION:
mysql> SELECT 23 AS bah
-> UNION
-> SELECT 45 AS bah;
+-----+
| bah |
+-----+
| 23 |
| 45 |
+-----+
2 rows in set (0.00 sec)
similary trivial example of JOIN:
mysql> SELECT * FROM
-> (SELECT 23 AS bah) AS fo...
How to initialize a dict with keys from a list and empty value in Python?
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dict.fromkeys([1, 2, 3, 4])
This is actually a classmethod, so it works for dict-subclasses (like collections.defaultdict) as well. The optional second argument specifies the value to use for the keys (defaults to None.)
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Closure in Java 7 [closed]
...e pioneers introducing closures in Java. His post on closures from January 28, 2007 is named A Definition of Closures On his blog there is lots of information to get you started as well as videos. An here is an excellent Google talk - Advanced Topics In Programming Languages - Closures For Java with...
Homebrew install specific version of formula?
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