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Iterate a list as pair (current, next) in Python
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Here's a relevant example from the itertools module docs:
import itertools
def pairwise(iterable):
"s -> (s0,s1), (s1,s2), (s2, s3), ..."
a, b = itertools.tee(iterable)
next(b, None)
return zip(a, b)
For Python 2, you need ite...
How to avoid “too many parameters” problem in API design?
...o understand.
public class Param
{
public string A { get; private set; }
public string B { get; private set; }
public string C { get; private set; }
public class Builder
{
private string a;
private string b;
private string c;
public Bui...
Fast way of finding lines in one file that are not in another?
I have two large files (sets of filenames). Roughly 30.000 lines in each file. I am trying to find a fast way of finding lines in file1 that are not present in file2.
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What is float in Java?
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How to format a floating number to fixed width in Python
How do I format a floating number to a fixed width with the following requirements:
7 Answers
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How to install an APK file on an Android phone?
...;-)
You need to enable USB debugging on the phone itself (by starting the Settings application and selecting Applications > Development > USB Debugging), install the Android USB device driver if you haven’t already (Windows only), and then plug the phone into your computer using the USB cab...
Strange out of memory issue while loading an image to a Bitmap object
...that let you specify decoding options via the BitmapFactory.Options class. Setting the inJustDecodeBounds property to true while decoding avoids memory allocation, returning null for the bitmap object but setting outWidth, outHeight and outMimeType. This technique allows you to read the dimensions a...
How to change JFrame icon [duplicate]
...object like this:
ImageIcon img = new ImageIcon(pathToFileOnDisk);
Then set it to your JFrame with setIconImage():
myFrame.setIconImage(img.getImage());
Also checkout setIconImages() which takes a List instead.
share
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How to search and replace text in a file?
...einput does (basically, use try..finally or a contextmanager to ensure you set stdout back to it's original value afterwards). The source code for fileinput is pretty eye-bleedingly awful, and it does some really unsafe things under the hood. If it were written today I very much doubt it would have ...
Reference: Comparing PHP's print and echo
...rm "language construct" in PHP usually refers to "pseudo" functions like isset or empty. Although these "constructs" look exactly like functions, they are actually fexprs, that is, the arguments are passed to them without being evaluated, which requires special treatment from the compiler. print hap...