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How do I check if a list is empty?
...wraps your input into an array if it's a list, tuple, etc., and optionally converts it to your chosen dtype. So it's very quick whenever it can be, and it ensures that you just get to assume the input is a NumPy array. We usually even just use the same name, as the conversion to an array won't mak...
Random string generation with upper case letters and digits
...random string of length string_length."""
random = str(uuid.uuid4()) # Convert UUID format to a Python string.
random = random.upper() # Make all characters uppercase.
random = random.replace("-","") # Remove the UUID '-'.
return random[0:string_length] # Return the random string.
p...
Given a number, find the next higher number which has the exact same set of digits as the original n
...orce increment, sort and compare
Along the brute force solutions would be convert to a String
and brute force all the possible numbers using those digits.
Create ints out of them all, put them in a list and sort it,
get the next entry after the target entry.
If you spent 30 minutes on this and di...
How to model type-safe enum types?
...nother class that is basically a wrapper around a string and can be freely converted in both directions (as is the case for Symbol). I guess that's what you meant when saying "It won't give you any type safety", it just wasn't very clear given that OP explicitly asked for type safe solutions. I wasn...
What exactly is metaprogramming?
...data structure. This is known as homoiconicity. Secondly, LISP code can be converted into data easily using QUOTE. For example (+ 1 2 3) adds 1+2+3 and (QUOTE (+ 1 2 3)) creates an expression that adds 1+2+3 when evaluated. Thirdly, LISP provided a meta-circular evaluator that allows you to use the ...
How to check task status in Celery?
... a computation. For instance if I want to show article X to a user, I must convert it from XML to HTML, but before that, I must have resolved all bibliographical references. (X is like a journal article.) I check whether the goal "article X with all bibliographical references resolved" exists and us...
How do I make JavaScript beep?
...mo
http://jsfiddle.net/7EAgz/
Conversion Tool
And here is where you can convert mp3 or wav files into Data URI format:
https://dopiaza.org/tools/datauri/index.php
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What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
... It's not a canonical path.
A canonical path is always an absolute path.
Converting from a path to a canonical path makes it absolute (usually tack on the current working directory so e.g. ./file.txt becomes c:/temp/file.txt). The canonical path of a file just "purifies" the path, removing and re...
Lazy Method for Reading Big File in Python?
...ne by line was not an option, but I still needed to process it row by row.
Converting'|' to '\n' before processing was also out of the question, because some of the fields of this csv contained '\n' (free text user input).
Using the csv library was also ruled out because the fact that, at least in e...
How to use the 'sweep' function
...,sd))
df_T=sweep(sweep(df,2,df_means,"-"),2,df_sds,"/")*10+50
This code convert raw scores to T scores (with mean=50 and sd=10):
> df
[,1] [,2] [,3] [,4] [,5]
[1,] 109 8 89 69 15
[2,] 85 13 25 150 26
[3,] 30 79 48 1 125
[4,] 56 74 23 140 100
[5,] 136...