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Vim: Creating parent directories on save
...
augroup BWCCreateDir
autocmd!
autocmd BufWritePre * if expand("<afile>")!~#'^\w\+:/' && !isdirectory(expand("%:h")) | execute "silent! !mkdir -p ".shellescape(expand('%:h'), 1) | redraw! | endif
augroup END
Note the conditions: expand("<afile>")!...
Reversing a linked list in Java, recursively
I have been working on a Java project for a class for a while now. It is an implementation of a linked list (here called AddressList , containing simple nodes called ListNode ). The catch is that everything would have to be done with recursive algorithms. I was able to do everything fine sans one ...
Is there a difference between using a dict literal and a dict constructor?
Using PyCharm, I noticed it offers to convert a dict literal :
10 Answers
10
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node.js child process - difference between spawn & fork
...s a command designed to run system commands. When you run spawn, you send it a system command that will be run on its own process, but does not execute any further code within your node process. You can add listeners for the process you have spawned, to allow your code interact with the spawned pr...
Android Studio: Module won't show up in “Edit Configuration”
I've imported a project to Android Studio with several subprojects.
28 Answers
28
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Check if at least two out of three booleans are true
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Rather than writing:
if (someExpression) {
return true;
} else {
return false;
}
Write:
return someExpression;
As for the expression itself, something like this:
boolean atLeastTwo(boolean a, boolean b, boolean c) {
re...
Is python's sorted() function guaranteed to be stable?
The documentation doesn't guarantee that. Is there any other place that it is documented?
5 Answers
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How to execute a JavaScript function when I have its name as a string
...t as a string. How do I convert that into a function pointer so I can call it later?
34 Answers
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Python multiprocessing pool.map for multiple arguments
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The answer to this is version- and situation-dependent. The most general answer for recent versions of Python (since 3.3) was first described below by J.F. Sebastian.1 It uses the Pool.starmap method, which accepts a sequence of argument tuples. It then automat...
How to make rounded percentages add up to 100%
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Since none of the answers here seem to solve it properly, here's my semi-obfuscated version using underscorejs:
function foo(l, target) {
var off = target - _.reduce(l, function(acc, x) { return acc + Math.round(x) }, 0);
return _.chain(l).
sortBy(f...