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Using module 'subprocess' with timeout
...
I don't know much about the low level details; but, given that in
python 2.6 the API offers the ability to wait for threads and
terminate processes, what about running the process in a separate
thread?
import subprocess, threading
c...
Merge (with squash) all changes from another branch as a single commit
...ool feature! I love git. While I'll definitely be using this in the future now, I'd still recommend getting to know your way around rebase -i. It's a good skill to have, just in case you really did want to make them more than just one commit.
– Will Buck
Feb 10...
Purge or recreate a Ruby on Rails database
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I know two ways to do this:
This will reset your database and reload your current schema with all:
rake db:reset db:migrate
This will destroy your db and then create it and then migrate your current schema:
rake db:drop db:...
How are strings passed in .NET?
...ine(strMain); // What gets printed?
}
There are three things you need to know to understand what happens here:
Strings are reference types in C#.
They are also immutable, so any time you do something that looks like you're changing the string, you aren't. A completely new string gets created, the ...
Implementing IDisposable correctly
... point of it. You can't assume it will automatically be called, you only know people are supposed to manually call it, but people do make mistakes and forget.
– Servy
Oct 1 '19 at 19:30
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Are Exceptions in C++ really slow
...th a taxi waiting, so I only had time then for a short comment. But having now commented and upvoted and downvoted I’d better add my own answer. Even if Matthieu’s answer already is pretty good.
Are exceptions especially slow in C++, compared to other languages?
Re the claim
“I was wat...
Would it be beneficial to begin using instancetype instead of id?
...entially no type checking at all. With instancetype, the compiler and IDE know what type of thing is being returned, and can check your code better and autocomplete better.
Only use it where it makes sense of course (i.e. a method that is returning an instance of that class); id is still useful.
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plot a circle with pyplot
...e, showing how units matter:
circle1 = plt.Circle((0, 0), 2, color='r')
# now make a circle with no fill, which is good for hi-lighting key results
circle2 = plt.Circle((5, 5), 0.5, color='b', fill=False)
circle3 = plt.Circle((10, 10), 2, color='g', clip_on=False)
ax = plt.gca()
ax.cla() # clear t...
Correct Bash and shell script variable capitalization
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Keeping to this convention, you can rest assured that you don't need to know every environment variable used by UNIX tools or shells in order to avoid overwriting them. If it's your variable, lowercase it. If you export it, uppercase it.
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Regex for password must contain at least eight characters, at least one number and both lower and up
...avor, \W matches only ASCII characters. So you haven't changed that, and now you have to filter out whitespace characters. Furthermore, all the parentheses and {1,} quantifiers you added are pure noise, and removing the non-greedy (?) operators was pointless. There is no improvement here.
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