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Why does Python code use len() function instead of a length method?
...
Strings do have a length method: __len__()
The protocol in Python is to implement this method on objects which have a length and use the built-in len() function, which calls it for you, similar to the way you would implement __iter__() and use the built-in ...
Do Java arrays have a maximum size?
...
Going by this article http://en.wikipedia.org/wiki/Criticism_of_Java#Large_arrays:
Java has been criticized for not supporting arrays of more than 231−1 (about 2.1 billion) elements. This is a limitation of the language; the Java Language Sp...
Wrapping a C library in Python: C, Cython or ctypes?
...ith as you're still writing Python!
I recently wrapped an FTDI driver for communicating with a USB chip using ctypes and it was great. I had it all done and working in less than one work day. (I only implemented the functions we needed, about 15 functions).
We were previously using a third-party ...
How to bind RadioButtons to an enum?
...icates that nothing should be done, which is what is wanted in that case.
http://msdn.microsoft.com/en-us/library/system.windows.data.ivalueconverter.convertback.aspx
http://msdn.microsoft.com/en-us/library/system.windows.data.binding.donothing.aspx
...
Showing empty view when ListView is empty
...ml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<!-- the android:id is important -->
<ListVie...
Assignment in an if statement
...;Dog>(dog => {
// Use dog in here
});
Alternatively, you could combine the two:
public static void AsIf<T>(this object value, Action<T> action) where T : class
{
// EVIL EVIL EVIL
for (var t = value as T; t != null; t = null)
{
action(t);
}
}
You ca...
How do I find all files containing specific text on Linux?
... Note(especially for newbies): The quotation marks in the above command are important.
– madD7
Dec 22 '15 at 12:37
75
...
Can the Android drawable directory contain subdirectories?
...h any items in it, within the res/drawable folder, will cause the resource compiler to fail -- preventing the R.java file from being generated correctly.
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Why use def main()? [duplicate]
...tion could be:
import sys
def main(argv):
# My code here
pass
if __name__ == "__main__":
main(sys.argv)
This means you can call main() from other scripts (or interactive shell) passing custom parameters. This might be useful in unit tests, or when batch-processing. But remember that t...
What use is find_package() if you need to specify CMAKE_MODULE_PATH anyway?
...eUploader: {
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