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Look up all descendants of a class in Ruby
...= 3, you have two options in place. Use .descendants if you want more than one level depth of children classes, or use .subclasses for the first level of child classes.
Example:
class Animal
end
class Mammal < Animal
end
class Dog < Mammal
end
class Fish < Animal
end
Animal.subclasse...
Get the latest record from mongodb collection
... also how last record is fetched when your are limiting the output to just one document and it must be the top document in collection.
– kailash yogeshwar
Nov 23 '16 at 16:58
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Install tkinter for Python
...
How does one install tkinter from sources? I have tcl/tk, verified using wish. I can't find the source tarball for tkinter.
– lapin
Mar 6 '17 at 18:19
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Coroutine vs Continuation vs Generator
...art with generators, seeing as they're the simplest case. As @zvolkov mentioned, they're functions/objects that can be repeatedly called without returning, but when called will return (yield) a value and then suspend their execution. When they're called again, they will start up from where they last...
Is there a Python caching library?
... Ah, I kept searching for this and all I found was a wiki that mentioned how to use it as an WSGI middleware. It looks like what I need, thank you.
– Stavros Korokithakis
Sep 15 '09 at 14:20
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Get Element value with minidom with Python
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When I do name[0].nodeValue is gives back "None", just to test I passed it name[0].nodeName and it gave me "name" which is correct. Any ideas?
– RailsSon
Nov 25 '08 at 14:09
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How to pass variable number of arguments to a PHP function
... probably means you can pack them into an array themselves -- and use that one for the second parameter of call_user_func_array.
Elements of that array you pass will then be received by your function as distinct parameters.
For instance, if you have this function :
function test() {
var_dump(f...
Add object to ArrayList at specified index
...shmap would indeed be able to solve this problem. I think I'll go for that one since it doesn't seem like I can add something at location 3 when there is no object at location 2.
– J. Maes
Sep 12 '11 at 8:35
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Sorting multiple keys with Unix sort
....14,1.15n
Would use character positions 4-5 in the first field (it's all one field for fixed width) and sort numerically as the first key.
The second key would be characters 14-15 in the first field also.
(edit)
Example (all I have is DOS/cygwin handy):
dir | \cygwin\bin\sort.exe -k 1.4,1.5n -...
How can I list all commits that changed a specific file?
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Whats the difference between that one and just git log filename?
– VaTo
Jun 17 '15 at 17:45
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