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List all of the possible goals in Maven 2?
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The goal you indicate in the command line is linked to the lifecycle of Maven. For example, the build lifecycle (you also have the clean and site lifecycles which are different) is composed of the following phases:
validate: validate the project is correct...
Adding a column to a data.frame
...xt, [[.data.frame.
Data frames can be indexed in several modes. When [ and [[ are used with a single vector index (x[i] or x[[i]]), they index the data frame as if it were a list.
my.dataframe["new.col"] <- a.vector
my.dataframe[["new.col"]] <- a.vector
The data.frame method for $, ...
Object initialization syntax
I'm just starting out with F# and I can't find the syntax to do object initialization like in C# 3.
3 Answers
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How to Customize the time format for Python logging?
I am new to Python's logging package and plan to use it for my project. I would like to customize the time format to my taste. Here is a short code I copied from a tutorial:
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Enum “Inheritance”
...st derive from System.Enum
Because of the above, all enums are value types and hence sealed
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What is an example of the Liskov Substitution Principle?
...ple (LSP) is a fundamental principle of object oriented design. What is it and what are some examples of its use?
31 Answer...
In git, what is the difference between merge --squash and rebase?
I'm new to git and I'm trying to understand the difference between a squash and a rebase. As I understand it you perform a squash when doing a rebase.
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How to override the [] operator in Python?
...elf, key):
return key * 2
myobj = MyClass()
myobj[3] #Output: 6
And if you're going to be setting values you'll need to implement the __setitem__ method too, otherwise this will happen:
>>> myobj[5] = 1
Traceback (most recent call last):
File "<stdin>", line 1, in <mo...
What's the best way to put a c-struct in an NSArray?
... to store c-structures in an NSArray ? Advantages, disadvantages, memory handling?
11 Answers
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How do I enable language extensions from within GHCi?
...HCi you'll actually get tab completion for available extensions, which is handy when you can't remember where they decided to use abbreviations ("MultiParam") or acronyms ("GADT") rather than spelling things out in full ("MonomorphismRestriction")...
– C. A. McCann
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