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R object identification
I am often ending up with a function producing output for which I don't understand the output data type. I'm expecting a list and it ends up being a list of lists or a data frame or something else. What's a good method or workflow for figuring out the output data type when first using a function?
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Nginx Different Domains on Same IP
...uded the relevant lines. Everything else looked okay but I just deleted it for clarity. To test it you might want to try serving a text file from each server first before actually serving php. That's why I left the 'root' directive in there.
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Rails 3 datatypes?
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and :references for polymorphic associations. See: api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/…
– Ethan
Jan 25 '12 at 8:46
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What does -XX:MaxPermSize do?
...to augment this space if you load many classes (this is typically the case for application servers and some IDE like Eclipse) :
The permanent generation does not have a noticeable impact on garbage
collector performance for most applications. However, some
applications dynamically generate a...
What's the correct way to sort Python `import x` and `from x import y` statements?
...sites and repositories also popularity, Alphabetical ordering is the way.
for eg like this:
import httplib
import logging
import random
import StringIO
import time
import unittest
from nova.api import openstack
from nova.auth import users
from nova.endpoint import cloud
OR
import a_standard
imp...
How to create loading dialogs in Android?
...or indeterminate progress, you should instead follow the design guidelines for Progress & Activity and use a ProgressBar in your layout."
– Ilya Kogan
May 7 '13 at 20:14
2
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Swift - Cast Int into enum:Int
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Use the rawValue initializer: it's an initializer automatically generated for enums.
self.timeFilterSelected = MyTimeFilter(rawValue: (sender as UIButton).tag)!
see: The Swift Programming Language § Enumerations
NOTE: This answer has changed. Earlier version of Swift use the class method fro...
How do you do natural logs (e.g. “ln()”) with numpy in Python?
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For those who were wondering what np is, like myself "import numpy as np"
– Ravi Sankar Raju
Jul 23 '14 at 0:50
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How do I test for an empty string in a Bash case statement?
I have a Bash script that performs actions based on the value of a variable. The general syntax of the case statement is:
3...
How to check whether dynamically attached event listener exists or not?
Here is my problem: is it possible somehow to check for existence of dynamically attached event listener? Or how can I check the status of the "onclick" (?) property in DOM? I have searched internet just like Stack Overflow for a solution, but no luck. Here is my html:
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