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When should I use Struct vs. OpenStruct?
... = 2;
Here are some common use cases.
OpenStructs can be used to easily convert hashes to one-off objects which respond to all the hash keys.
h = { a: 1, b: 2 }
o = OpenStruct.new(h)
o.a = 1
o.b = 2
Structs can be useful for shorthand class definitions.
class MyClass < Struct.new(:a,:b,:c)...
how to File.listFiles in alphabetical order?
...
-1 I really don't understand the advantage of converting the file array to a string array and then sorting rather than just sorting the file array as the accepted answer does.
– zelanix
Feb 17 '14 at 21:49
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Dynamic instantiation from string name of a class in dynamically imported module?
...ght but I have done the following to get the os.path.join method: getattr(sys.modules["os.path"], "join")
– Javier Novoa C.
Jul 1 '15 at 17:55
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How to add a new row to an empty numpy array
...it would be much faster to append to a list as in your first example, then convert to a numpy array at the end, since you're really not using numpy as intended during the loop:
In [210]: %%timeit
.....: l = []
.....: for i in xrange(1000):
.....: l.append([3*i+1,3*i+2,3*i+3])
.....:...
Objective-C formatting string for boolean?
...
One way to do it is to convert to strings (since there are only two possibilities, it isn't hard):
NSLog(@" %s", BOOL_VAL ? "true" : "false");
I don't think there is a format specifier for boolean values.
...
Is there a way to make R beep/play a sound at the end of a script?
...r know when something is finished. Is there a way to invoke a beep (like a system beep) or get R to play a sound or notify growl via some code at the end of my script?
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This Handler class should be static or leaks might occur: IncomingHandler
...the whole point. Unless he has some ultra cool compiler that automatically converts inner classes to static classes when they don't use class variables.
– Sogger
Jan 7 '15 at 18:22
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What's invokedynamic and how do I use it?
...ions on the types of values supplied to its operations (e.g. Java)
Weak - converts (casts) arguments of an operation if those arguments have incompatible types (e.g. Visual Basic)
Knowing that Java is a Statically and Weakly typed, how do you implement Dynamically and Strongly typed languages on t...
PowerShell script to return versions of .NET Framework on a machine?
... slightly again, so there's now a nice MSDN article here explaining how to convert the Release value to a .Net version number, it's a total train wreck :-(
This looks right to me (note that it outputs separate version numbers for WCF & WPF on 3.0. I don't know what that's about). It also output...
How to read a file line-by-line into a list?
...list takes up about 13.22% more space than a tuple. Results come from from sys import getsizeof as g; i = [None] * 1000; round((g(list(i)) / g(tuple(i)) - 1) * 100, 2). Creating a tuple takes about 4.17% more time than creating a list (with a 0.16% standard deviation). Results come from running from...