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Can Python print a function definition?
...
You can use the __doc__ keyword:
#print the class description
print string.__doc__
#print function description
print open.__doc__
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How to find out which package version is loaded in R?
...l_0.3
[7] proto_0.3-9.2 RColorBrewer_1.0-5 scales_0.2.0 stringr_0.6
>
However, as per comments and the answer below, there are better options
> packageVersion("snow")
[1] ‘0.3.9’
Or:
"Rmpi" %in% loadedNamespaces()
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Setting an object to null vs Dispose()
...ode) to know when you're not going to use a reference again. For example:
StringBuilder sb = new StringBuilder();
sb.Append("Foo");
string x = sb.ToString();
// The string and StringBuilder are already eligible
// for garbage collection here!
int y = 10;
DoSomething(y);
// These aren't helping at...
What does “Could not find or load main class” mean?
...with signature, return type and modifiers given by public static void main(String[]). (Note, the method argument's name is NOT part of the signature.)
Call that method passing it the command line arguments ("fred", "joe", "bert") as a String[].
Reasons why Java cannot find the class
When you get...
What can I do to resolve a “Row not found or changed” Exception in LINQ to SQL on a SQL Server Compa
...ble in your O/R-Mapping, LINQ will load it successfully and set the column-String to null.
Now you change something and call
SubmitChanges().
LINQ will generate a SQL query
containing "WHERE [title] IS NULL", to make sure the title has not been changed by someone else.
LINQ looks up the properties...
Should I use encodeURI or encodeURIComponent for encoding URLs?
...cial meaning, so you use it for components of URIs such as
var world = "A string with symbols & characters that have special meaning?";
var uri = 'http://example.com/foo?hello=' + encodeURIComponent(world);
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Entity Framework 6 Code first Default value
...ltValue as this defaultValue: System.DateTimeOffset.Now, will resolve to a string of the current system datetimeoffset value.
– OzBob
Apr 15 '16 at 6:53
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Flattening a shallow list in Python [duplicate]
...for el in x:
if hasattr(el, "__iter__") and not isinstance(el, basestring):
result.extend(flatten(el))
else:
result.append(el)
return result
It's the recursion which allows for arbitrary depth nesting - until you hit the maximum recursion depth, of cours...
Templated check for the existence of a class member function?
...SFINAE causes the template to be ignored. Usage like this:
HAS_MEM_FUNC(toString, has_to_string);
template<typename T> void
doSomething() {
if(has_to_string<T, std::string(T::*)()>::value) {
...
} else {
...
}
}
But note that you cannot just call that toString fu...
How to paste yanked text into the Vim command line
...u cannot live without them.
Registers are basically storage locations for strings. Vim has many registers that work in different ways:
0 (yank register: when you use y in normal mode, without specifying a register, yanked text goes there and also to the default register),
1 to 9 (shifting delete ...