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Clear a terminal screen for real
... user into thinking the screen has been cleared...you can still see output from the previous commands when you scroll using the mouse. This makes life difficult when you are drowning in a tsunami of text.
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open() in Python does not create a file if it doesn't exist
...if it exists, or if it does not, then create it and open it as read/write? From what I read, file = open('myfile.dat', 'rw') should do this, right?
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I can’t find the Android keytool
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Okay, so this post is from six months ago, but I thought I would add some info here for people who are confused about the whole API key/MD5 fingerprint business. It took me a while to figure out, so I assume others have had trouble with it too (un...
Why it's not possible to use regex to parse HTML/XML: a formal explanation in layman's terms
...ta structure underlying a regular
expression) does not have memory apart from the state it's in, and if
you have arbitrarily deep nesting, you need an arbitrarily large
automaton, which collides with the notion of a finite automaton.
The definition of regular expressions is equivalent to the...
How to escape text for regular expression in Java
.... That's what $1, $2 or $3 means in the replacement text: matching groups from the search pattern.
I frequently plug long strings of text into .properties files, then generate email subjects and bodies from those. Indeed, this appears to be the default way to do i18n in Spring Framework. I put X...
Make copy of an array
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Nice explanation from http://www.journaldev.com/753/how-to-copy-arrays-in-java
Java Array Copy Methods
Object.clone(): Object class provides clone() method and since array
in java is also an Object, you can use this method to achieve f...
How to send cookies in a post request with the Python Requests library?
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The latest release of Requests will build CookieJars for you from simple dictionaries.
import requests
cookies = {'enwiki_session': '17ab96bd8ffbe8ca58a78657a918558'}
r = requests.post('http://wikipedia.org', cookies=cookies)
Enjoy :)
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How do you get a directory listing sorted by creation date in python?
...te: to sort dirpath's entries by modification date in Python 3:
import os
from pathlib import Path
paths = sorted(Path(dirpath).iterdir(), key=os.path.getmtime)
(put @Pygirl's answer here for greater visibility)
If you already have a list of filenames files, then to sort it inplace by creation ...
Capturing URL parameters in request.GET
...ameters in a URL, as described in the tutorial. How do I access parameters from the URL as part the HttpRequest object?
1...
How to sort in-place using the merge sort algorithm?
...resented as ranges [i, m) and [j, n) respectively. The working area starts from w. Compare with the standard merge algorithm given in most textbooks, this one exchanges the contents between the sorted sub-array and the working area. As the result, the previous working area contains the merged sorted...