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Random record from MongoDB
...or older versions (previous answer)
This was actually a feature request: http://jira.mongodb.org/browse/SERVER-533 but it was filed under "Won't fix."
The cookbook has a very good recipe to select a random document out of a collection: http://cookbook.mongodb.org/patterns/random-attribute/
To p...
Recursive sub folder search and return files in a list python
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Execute code when Django starts ONCE only?
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@Andrei: Management Commands are entirely a separate problem. The idea of special one-time startup before all management commands is hard to understand. You'll have to provide something specific. Perhaps in another question.
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C++0x has no semaphores? How to synchronize threads?
Is it true that C++0x will come without semaphores? There are already some questions on Stack Overflow regarding the use of semaphores. I use them (posix semaphores) all the time to let a thread wait for some event in another thread:
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momentJS date string add 5 days
...t().add(5, 'days').format("D/M/YYYY") You can look a while here : momentjs.com/docs/#/manipulating/add
– Costas Bakoulias
Jul 12 '19 at 9:50
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Calling Java from Python
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Here is my summary of this problem: 5 Ways of Calling Java from Python
http://baojie.org/blog/2014/06/16/call-java-from-python/ (cached)
Short answer: Jpype works pretty well and is proven in many projects (such as python-boilerpipe), but Pyjnius is faster and simpler than JPype
I have tried P...
Stateless and Stateful Enterprise Java Beans
...u need to perform a JNDI lookup and store the returned EJB instance in the HttpSession object for future activity. Something like that:
try {
InitialContext ctx = new InitialContext();
myStateful = (MyStateful)ctx.lookup("java:comp/env/MyStatefulBean");
session.setAttribute("my_stateful...
What does 'COLLATE SQL_Latin1_General_CP1_CI_AS' do?
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It sets how the database server sorts (compares pieces of text). in this case:
SQL_Latin1_General_CP1_CI_AS
breaks up into interesting parts:
latin1 makes the server treat strings using charset latin 1, basically ascii
CP1 stands for Code Page 1252
CI case in...
Efficient method to generate UUID String in JAVA (UUID.randomUUID().toString() without the dashes)
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Dashes don't need to be removed from HTTP request as you can see in URL of this thread.
But if you want to prepare well-formed URL without dependency on data you should use URLEncoder.encode( String data, String encoding ) instead of changing standard form of yo...
std::enable_if to conditionally compile a member function
...ble_if . After I read this answer , I thought it shouldn't be too hard to come up with a simple example. I want to use std::enable_if to choose between two member-functions and allow only one of them to be used.
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