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Generator Expressions vs. List Comprehension
...thing for something in get_some_stuff())
print gen()[:2] # generators don't support indexing or slicing
print [5,6] + gen() # generators can't be added to lists
Basically, use a generator expression if all you're doing is iterating once. If you want to store and use the generated results, th...
What does Java option -Xmx stand for? [duplicate]
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see here: Java Tool Doc, it says,
-Xmxn
Specify the maximum size, in bytes, of the memory allocation pool. This value must a multiple of 1024 greater than 2MB. Append the letter k or K to indicate kilobytes, or m or M to indicate megab...
What does “all” stand for in a makefile?
...or me it is still unclear for what the target "all" stands for and what it does.
4 Answers
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How can we generate getters and setters in Visual Studio?
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And don't forget "propg" + tab which generates the same, but with a private setter.
– Andrew M
Nov 17 '09 at 9:31
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Converting Java objects to JSON with Jackson
...hird-party library to aid in the endeavor: org.codehaus.jackson
All of the downloads for this can be found here.
For base JSON functionality, you need to add the following jars to your project's libraries:
jackson-mapper-asl
and
jackson-core-asl
Choose the version your project needs. (Typic...
Generate full SQL script from EF 5 Code First Migrations
How do I use Entity Framework 5 Code First Migrations to create a full database script from the initial (empty) state to the latest migration?
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Change Bootstrap tooltip color
What I'm trying to do is change the tooltip color to red. However, I also want to have multiple other colors so I don't simply want to replace the original tooltip's color.
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When to use , tag files, composite components and/or custom components?
...ference with composite components is that the output of a Facelet tag file does not represent a single UIComponent and may in some circumstances be the only solution when a composite component doesn't suffice. Generally, having an <ui:include> with one or more <ui:param> which passes a m...
Why is “if not someobj:” better than “if someobj == None:” in Python?
...e. Roughly, we are asking the object : are you meaningful or not ? This is done using the following algorithm :
If the object has a __nonzero__ special method (as do numeric built-ins, int and float), it calls this method. It must either return a bool value which is then directly used, or an int v...
How to show SQL queries run in the Rails console?
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Enter this line in the console:
ActiveRecord::Base.logger = Logger.new(STDOUT)
Rails 2
Enter this line in the console:
ActiveRecord::Base.connection.instance_variable_set :@logger, Logger.new(STDOUT)
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