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sys.argv[1] meaning in script
...like to note that previous answers made many assumptions about the user's knowledge. This answer attempts to answer the question at a more tutorial level.
For every invocation of Python, sys.argv is automatically a list of strings representing the arguments (as separated by spaces) on the command-l...
What is the difference between concurrency and parallelism?
...ery important tasks in one day:
Get a passport
Get a presentation done
Now, the problem is that task-1 requires you to go to an extremely bureaucratic government office that makes you wait for 4 hours in a line to get your passport. Meanwhile, task-2 is required by your office, and it is a criti...
Difference between Divide and Conquer Algo and Dynamic Programming
...iginal solution and the technique of storing the sub-problem solutions is known as memoization.
You may think of DP = recursion + re-use
A classic example to understand the difference would be to see both these approaches towards obtaining the nth fibonacci number. Check this material from MIT.
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onIabPurchaseFinished never called.
... had the same issue and that worked perfect. But what i want to know is why doesnt the call back get executed like one would assume, why do we have to make the call to that our self? Kind of makes the callback useless :/
– Spider
Mar 21 '13 at 1:37
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Perform .join on value in array of objects
...tring, and so a.name is undefined) isn't treated as an object.
Edit: I've now refactored it further to this:
x.reduce(function(a, b) {return a + ["", ", "][+!!a.length] + b.name;}, "");
which I believe is cleaner as a is always a string, b is always an object (due to the use of the optional ini...
Update Git submodule to latest commit on origin
...git submodule init
# Time passes, submodule upstream is updated
# and you now want to update
# Change to the submodule directory
cd submodule_dir
# Checkout desired branch
git checkout master
# Update
git pull
# Get back to your project root
cd ..
# Now the submodules are in the state you want...
express 4.0 , express-session with odd warning message
...s will change so they want to ensure that by setting the values explicitly now, you won't run into unexpected behavior when the defaults do change (in the near future).
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Command to change the default home directory of a user
I would like to know whether there is any simple shell command to change the user home directory in Linux/Unix (one similar to chsh which changes the default login shell of an existing valid user) without touching the /etc/passwd file. Thanks
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Ignoring a class property in Entity Framework 4.1 Code First
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With v5 > of EF these now live in System.ComponentModel.DataAnnotations.Schema
– Daveo
Feb 3 '13 at 11:48
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Disable browser's back button
...n't really answer the poster's question. Let's just assume that everyone knows this is a bad idea, but we are curious about how it's done anyway...
You cannot disable the back button on a user's browser, but you can make it so that your application breaks (displays an error message, requiring the ...