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Possibility of duplicate Mongo ObjectId's being generated in two different collections?
...eness on a single collection if you use other types for the key, such as a string in your example.
– mstearn
Jan 13 '11 at 6:18
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T-SQL: Opposite to string concatenation - how to split string into multiple records [duplicate]
I have seen a couple of questions related to string concatenation in SQL.
I wonder how would you approach the opposite problem: splitting coma delimited string into rows of data:
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What is difference between MVC, MVP & MVVM design pattern in terms of coding c#
...aes:
Data Manipulation should be done by View as it wants and this will be extra work on UI thread which may effect UI rendering if data processing is more.
MVVM:
After announcing Architectural components,we got access to ViewModel which provided us biggest advantage i.e it's lifecycle aware.So,it w...
What do people think of the fossil DVCS? [closed]
...h principles and continue them at its core as it gathers more layers (GUI, extra features).
I am impressed with Fossil and starting to use... take a look at fossil
cheers
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What are the differences between numpy arrays and matrices? Which one should I use?
... here. Instead of performing fewer checks, using matrix*matrix requires an extra function call. So the advantage of using matrix is purely syntactic, not better performance.
– unutbu
Sep 18 '17 at 20:44
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Calling JMX MBean method from a shell script
...Url
def serverUrl = 'service:jmx:rmi:///jndi/rmi://localhost:9003/jmxrmi'
String beanName = "com.webwars.gameplatform.data:type=udmdataloadsystem,id=0"
def server = JmxFactory.connect(new JmxUrl(serverUrl)).MBeanServerConnection
def dataSystem = new GroovyMBean(server, beanName)
println "Connected...
When should null values of Boolean be used?
...umn).
I see no reason to convert from boolean to Boolean as it introduces extra memory overhead, NPE possibility and less typing. Typically I use awkward BooleanUtils.isTrue() to make my life a little bit easier with Boolean.
The only reason for the existence of Boolean is the ability to have coll...
How to remove items from a list while iterating?
...could do reversed(list(enumerate(somelist))) if you don't mind creating an extra list in memory.
– drevicko
Aug 2 '15 at 23:27
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How to concatenate columns in a Postgres SELECT?
I have two string columns a and b in a table foo .
8 Answers
8
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How to use filter, map, and reduce in Python 3
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You do not need to create extra functions in list comprehensions. Just use [i*i*i for i in range(1,11)]
– Xiao
Jul 22 '14 at 3:25
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