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Generating all permutations of a given string
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Solution seems to be coming from here introcs.cs.princeton.edu/java/23recursion/…
– cyber-monk
Aug 8 '12 at 16:05
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How do you compare two version Strings in Java?
Is there a standard idiom for comparing version numbers? I can't just use a straight String compareTo because I don't know yet what the maximum number of point releases there will be. I need to compare the versions and have the following hold true:
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iPhone get SSID without private library
I have a commercial app that has a completely legitimate reason to see the SSID of the network it is connected to: If it is connected to a Adhoc network for a 3rd party hardware device it needs to be functioning in a different manner than if it is connected to the internet.
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How do I get a string format of the current date time, in python?
...ng the raw value as {}, use formatting to obtain the correct date format.
https://docs.python.org/3/library/string.html#formatexamples
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Why are dates calculated from January 1st, 1970?
...he date was chosen. It just was.
Astronomers use their own epochal date: http://en.wikipedia.org/wiki/Epoch_(astronomy)
Why? A date has to be chosen to make the math work out. Any random date will work.
A date far in the past avoids negative numbers for the general case.
Some of the smarter p...
How can I make my match non greedy in vim?
...ur lives harder as developers. Luckily many tools at least provide a Perl-compatible implementation of regex these days. Unfortunately Vim is not one of them.
– Randy Morris
Apr 18 '13 at 17:16
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Concatenating two lists - difference between '+=' and extend()
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Maybe the difference has more implications when it comes to ducktyping and if your maybe-not-really-a-list-but-like-a-list supports .__iadd__()/.__add__()/.__radd__() versus .extend()
– Nick T
Dec 15 '14 at 22:21
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GitHub Error Message - Permission denied (publickey)
...the SSH/git URL to avoid having to deal with SSH keys. This is GitHub's recommended method.
Further, GitHub has a help page specifically for that error message, and explains in more detail everything you could check.
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Using arrays or std::vectors in C++, what's the performance gap?
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Now the std::vector vs. native C++ arrays (taken from the internet):
// Comparison of assembly code generated for basic indexing, dereferencing,
// and increment operations on vectors and arrays/pointers.
// Assembly code was generated by gcc 4.1.0 invoked with g++ -O3 -S on a
// x86_64-suse...
fs: how do I locate a parent folder?
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Use path.join http://nodejs.org/docs/v0.4.10/api/path.html#path.join
var path = require("path"),
fs = require("fs");
fs.readFile(path.join(__dirname, '..', '..', 'foo.bar'));
path.join() will handle leading/trailing slashes for you...