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random.seed(): What does it do?
...andom number generators work by performing some operation on a value. Generally this value is the previous number generated by the generator. However, the first time you use the generator, there is no previous value.
Seeding a pseudo-random number generator gives it its first "previous" value. Each...
Fastest way to reset every value of std::vector to 0
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Looking at the assembly output, gcc actually unrolls this loop into using the mmx registers to dump in 16 bytes at a time until it gets close to the end. I'd say that's pretty fast. The memset version jumps to memset, which I'm guessing is about as fast. I'd use yo...
Why are only a few video games written in Java? [closed]
...d port it, that takes a lot of effort (and of course, the license needs to allow it).
Also, a lot of legacy code already exists in C++. If code from previous projects can be reused (say, if you're writing a sequel), that counts even more in favor of sticking with the same language, instead of rewri...
Design Pattern for Undo Engine
...this. Every user-action that's undoable gets its own command instance with all the information to execute the action and roll it back. You can then maintain a list of all the commands that have been executed and you can roll them back one by one.
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What is duck typing?
...ot that well defined. Neither is Duck Typing. Google Go or Ocaml are statically typed languages with a structural subtyping-construction. Are these duck typed languages?
– I GIVE CRAP ANSWERS
Nov 17 '10 at 15:27
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Have a div cling to top of screen if scrolled down past it [duplicate]
...ching a handler to the window.scroll event
// Cache selectors outside callback for performance.
var $window = $(window),
$stickyEl = $('#the-sticky-div'),
elTop = $stickyEl.offset().top;
$window.scroll(function() {
$stickyEl.toggleClass('sticky', $window.scrollTop()...
I want to remove double quotes from a String
...(/['"]+/g, ''));
That should do the trick... (if your goal is to replace all double quotes).
Here's how it works:
['"] is a character class, matches both single and double quotes. you can replace this with " to only match double quotes.
+: one or more quotes, chars, as defined by the preceding ...
Include .so library in apk in android studio [duplicate]
...on in which I am trying to use sqlcipher , which uses .so libraries internally. I have read the documentation on how to use sqlcipher with android app . I have followed the steps and it compiles without any error. But, at runtime it throws UnsatisfiedLinkError .
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Physical vs. logical / soft delete of database record?
...(i.e. setting a flag stating that the record is deleted) as opposed to actually or physically deleting the record?
26 Answe...
Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
How to I get mongo to use a mounted drive on ec2? I really do not understand. I attached a volume on ec2 formatted the drive as root and start as root and yet as root I cant access? I am running on ubuntu 12.04. No other mongo is running
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