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Remove specific characters from a string in Python
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This probably isn't performant because you're allocating a new string for every character
– OneCricketeer
Dec 3 '18 at 14:37
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.NET HashTable Vs Dictionary - Can the Dictionary be as fast?
...est - SortedList vs. SortedDictionary vs. Dictionary vs. Hashtable
Memory allocation:
Time used for inserting:
Time for searching an item:
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How to find duplicates in 2 columns not 1
...e of
their InnoDB fast index creation feature [http://bugs.mysql.com/bug.php?id=40344]. In this case
first run set session old_alter_table=1 and then the above command
will work fine
Update - ALTER IGNORE Removed In 5.7
From the docs
As of MySQL 5.6.17, the IGNORE clause is deprecated ...
Calculate relative time in C#
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Here a rewrite from Jeffs Script for PHP:
define("SECOND", 1);
define("MINUTE", 60 * SECOND);
define("HOUR", 60 * MINUTE);
define("DAY", 24 * HOUR);
define("MONTH", 30 * DAY);
function relativeTime($time)
{
$delta = time() - $time;
if ($delta < 1...
Mongoose (mongodb) batch insert?
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insertMany doesn't work for me. I got a fatal error allocation failed. But if I use collection.insert It works perfectly.
– John
Dec 12 '16 at 13:03
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Improve INSERT-per-second performance of SQLite
...formed (which in this loop is always the case). This will save you several allocate, copy and deallocate operations per loop. Possibly a large improvement.
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How do you add an array to another array in Ruby and not end up with a multi-dimensional result?
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@phatmann Concatenation with Array#concat does not allocate a new array, Concatenation with Array#+ does
– cbliard
Jul 21 '14 at 9:19
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Java ByteBuffer to String
...wers may not work with a ByteBuffer that's been created through ByteBuffer.allocateDirect().
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Convert HTML to NSAttributedString in iOS
...can initialize an NSAttributedString using HTML, eg:
[[NSAttributedString alloc] initWithData:[htmlString dataUsingEncoding:NSUTF8StringEncoding]
options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,
NSCharact...
Passing parameters to a Bash function
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Knowledge of high level programming languages (C/C++/Java/PHP/Python/Perl ...) would suggest to the layman that bash functions should work like they do in those other languages. Instead, bash functions work like shell commands and expect arguments to be passed to them in the same wa...