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Create an empty list in python with certain size
... 5, 6, 7, 8]
List comprehension (Using the squares because for range you don't need to do all this, you can just return range(0,9) ):
>>> def display():
... return [x**2 for x in range(9)]
...
>>> print display()
[0, 1, 4, 9, 16, 25, 36, 49, 64]
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How do I detect “shift+enter” and generate a new line in Textarea?
...ttps://stackoverflow.com/a/6015906/4031815
My solution
I think you can do something like this..
EDIT : Changed the code to work irrespective of the caret postion
First part of the code is to get the caret position.
Ref: How to get the caret column (not pixels) position in a textarea, in ch...
How do I test for an empty string in a Bash case statement?
...string is written, as usual, as "" or '':
case "$command" in
"") do_empty ;;
something) do_something ;;
prefix*) do_prefix ;;
*) do_other ;;
esac
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General guidelines to avoid memory leaks in C++ [closed]
What are some general tips to make sure I don't leak memory in C++ programs? How do I figure out who should free memory that has been dynamically allocated?
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Why don't they teach these things in school? [closed]
...n the sum of all my university coursework). I'm really wondering why they don't teach a few of the things I learned sooner in school though. To name a few:
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What exactly does an #if 0 … #endif block do?
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Not only does it not get executed, it doesn't even get compiled.
#if is a preprocessor command, which gets evaluated before the actual compilation step. The code inside that block doesn't appear in the compiled binary.
It's often us...
Storing Data in MySQL as JSON
I thought this was a n00b thing to do. And, so, I've never done it. Then I saw that FriendFeed did this and actually made their DB scale better and decreased latency. I'm curious if I should do this. And, if so, what's the right way to do it?
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Checking Bash exit status of several commands efficiently
...multiple commands, like a 'try' statement but within bash. I would like to do something like this:
14 Answers
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How do I make a column unique and index it in a Ruby on Rails migration?
...column unique in Ruby on Rails migration script. What is the best way to do it? Also is there a way to index a column in a table?
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What does [].forEach.call() do in JavaScript?
...ever you passed call, as the first argument (undefined or null will use window in everyday JS, or will be whatever you passed, if in "strict-mode"). The rest of the arguments will be passed to the original function.
[1, 2, 3].forEach.call(["a", "b", "c"], function (item, i, arr) {
console.log...