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Conventions for exceptions or error codes
...error codes.
The default behaviour of an exception is to unwind the stack and stop the program, if I'm writing a script an and I go for a key that's not in a dictionary it's probably an error, and I want the program to halt and let me know all about that.
If, however, I'm writing a piece of code ...
Create a tar.xz in one command
I am trying to create a .tar.xz compressed archive in one command. What is the specific syntax for that?
5 Answers
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Setting an object to null vs Dispose()
I am fascinated by the way the CLR and GC works (I'm working on expanding my knowledge on this by reading CLR via C#, Jon Skeet's books/posts, and more).
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HTML inside Twitter Bootstrap popover
...since it belongs to <a href="#" that's why it wasn't working, change it and it's all good.
Here is working JSFiddle which shows you how to create bootstrap popover.
Relevant parts of the code is below:
HTML:
<!--
Note: Popover content is read from "data-content" and "title" tags.
-->
<a...
Python OpenCV2 (cv2) wrapper to get image size?
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cv2 uses numpy for manipulating images, so the proper and best way to get the size of an image is using numpy.shape. Assuming you are working with BGR images, here is an example:
>>> import numpy as np
>>> import cv2
>>> img = cv2.imread('foo.jpg')
&g...
Add centered text to the middle of a -like line
...he compatibility is not that bad (you can add all of old flexbox syntaxes) and it degrades gracefully.
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How can I brew link a specific version?
...oo like /usr/local/Cellar/libfoo/1.0.1 , /usr/local/Cellar/libfoo/HEAD and /usr/local/Cellar/libfoo/mycopy
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Thread.Sleep replacement in .NET for Windows Store
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Windows Store apps embrace asynchrony - and an "asynchronous pause" is provided by Task.Delay. So within an asynchronous method, you'd write:
await Task.Delay(TimeSpan.FromSeconds(30));
... or whatever delay you want. The asynchronous method will continue 30 sec...
Split Strings into words with multiple word boundary delimiters
...task but I've found no reference on the web. I have text with punctuation, and I want a list of the words.
31 Answers
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Best ways to teach a beginner to program? [closed]
...ad to work with several beginner (never wrote a line of code) programmers, and I'll be doing an after school workshop with high school students this fall. This is the closest thing I've got to documentation. It's still a work in progress, but I hope it helps.
1) FizzBuzz. Start with command line pr...