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How do you disable the unused variable warnings coming out of gcc in 3rd party code I do not wish to
...itch usually does the trick. However, that is a very useful warning indeed if you care about these things in your project. It becomes annoying when GCC starts to warn you about things not in your code though.
I would recommend you keeping the warning on, but use -isystem instead of -I for include d...
How can I filter lines on load in Pandas read_csv function?
...ther load the file and then filter using df[df['field'] > constant], or if you have a very large file and you are worried about memory running out, then use an iterator and apply the filter as you concatenate chunks of your file e.g.:
import pandas as pd
iter_csv = pd.read_csv('file.csv', iterat...
Why do we need argc while there is always a null at the end of argv?
...==NULL is guaranteed. See C11 5.1.2.2.1 Program startup (my emphasis)
If they are declared, the parameters to the main function shall obey
the following constraints:
The value of argc shall be nonnegative.
argv[argc] shall be a null
pointer.
Providing argc therefore isn't vital but...
Android ClassNotFoundException: Didn't find class on path
I'm not really sure what is causing it as it is correctly listed in the manifest:
37 Answers
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What's Go's equivalent of argv[0]?
...guments are exposed in the os package http://golang.org/pkg/os/#Variables
If you're going to do argument handling, the flag package http://golang.org/pkg/flag is the preferred way. Specifically for your case flag.Usage
Update for the example you gave:
func usage() {
fmt.Fprintf(os.Stderr, "us...
Static classes and methods in coffeescript
...Box2DUtility.drawWorld()
Demo: http://jsfiddle.net/ambiguous/5yPh7/
And if you want your drawWorld to act like a constructor then you can say new @ like this:
class Box2DUtility
constructor: (s) -> @s = s
m: () -> alert "instance method called: #{@s}"
@drawWorld: (s) -> new @ s
B...
raw_input function in Python
...
name = raw_input("What is your name? ")
print "Hello, %s." % name
This differs from input() in that the latter tries to interpret the input given by the user; it is usually best to avoid input() and to stick with raw_input() and custom parsing/conversion code.
Note: This is for Python 2.x
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Zipping streams using JDK8 with lambda (java.util.stream.Streams.zip)
...st took the source code from b93 and put it in a "util" class. I had to modify it slightly to work with the current API.
For reference here's the working code (take it at your own risk...):
public static<A, B, C> Stream<C> zip(Stream<? extends A> a,
...
Matplotlib: draw grid lines behind other graph elements
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(I am currently installing matplotlib for the first time, so have no idea if that's correct - I just found it by googling "matplotlib z order grid" - "z order" is typically used to describe this kind of thing (z being the axis "out of the page"))
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How to force ViewPager to re-instantiate its items [duplicate]
...hat they are no longer valid or needs to be refreshed? I tried to call notifyDataSetChanged() on its adapter but this does not invoke instantiateItem() method again.
...