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Are there any O(1/n) algorithms?
...put size for which the algorithm is not supposed to execute any operation. And therefore I would think that O(1/n) time complexity is indeed impossible to achieve.
– Roland Ewald
May 25 '09 at 14:10
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bash HISTSIZE vs. HISTFILESIZE?
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Short answer:
HISTSIZE is the number of lines or commands that are stored in memory in a history list while your bash session is ongoing.
HISTFILESIZE is the number of lines or commands that (a) are allowed in the history file at startup time of a session, and (b) are stored i...
How do you get the rendered height of an element?
...gly suggest anyone implementing this by using just offsetHeight goes ahead and downloads the jQuery source and searches for "height" to find the code they use. lots of crazy stuff going on in there !
– Simon_Weaver
Feb 13 '09 at 3:57
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Fastest way to determine if record exists
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@Declan_K: seems like my magic sphere failed in this case and a column entitled as id isn't PK. So +1 to your advice.
– zerkms
Aug 7 '13 at 22:00
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How do I create a list of random numbers without duplicates?
I tried using random.randint(0, 100) , but some numbers were the same. Is there a method/module to create a list unique random numbers?
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How to use Elasticsearch with MongoDB?
I have gone through many blogs and sites about configuring Elasticsearch for MongoDB to index Collections in MongoDB but none of them were straightforward.
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What does 'synchronized' mean?
I have some questions regarding the usage and significance of the synchronized keyword.
17 Answers
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Build project into a JAR automatically in Eclipse
... for is, that like Eclipse automatically builds a project's .class files and put them in target folder; it should also build a JAR automatically and copy the latest JAR at some or a specific location.
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How to change max_allowed_packet size
...on in your file:
max_allowed_packet=500M
then restart the MySQL service and you are done.
See the documentation for further information.
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What is the best Distributed Brute Force countermeasure?
...t is no secret that I am implementing an auth+auth system for CodeIgniter, and so far I'm winning (so to speak). But I've run into a pretty non-trivial challenge (one that most auth libraries miss entirely, but I insist on handling it properly): how to deal intelligently with large-scale, distribut...