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How can you do anything useful without mutable state?
...new pacman(0, 0)
while true
if key = UP then pacman.y++
elif key = DOWN then pacman.y--
elif key = LEFT then pacman.x--
elif key = UP then pacman.x++
render(pacman)
// functional version
let rec loop pacman =
render(pacman)
let x, y = switch(key)
case LEFT: pacma...
What are all the uses of an underscore in Scala?
... @angelokh That's anonymous function placeholder parameter, fifth down the list.
– Daniel C. Sobral
Sep 2 '13 at 22:22
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show 5 mor...
Browser statistics on JavaScript disabled [closed]
... also considers JavaScript disabled vs. JavaScript 'not received or run'.
https://gds.blog.gov.uk/2013/10/21/how-many-people-are-missing-out-on-javascript-enhancement/
In the interests of link-rot, the number was 1.1% with 0.9% of that where it was enabled in the browser but otherwise not run, due...
What are the benefits of learning Vim? [closed]
...rom a different line (or even the same line), or moving 1 or 2 lines up or down from the current position require too much typing or involve the use of the arrow keys ...and it gets worse when I want to move further - I end up using the mouse. Now imagine this same scenario but on a laptop.
...
转：postfix安装Q&A - 更多技术 - 清泛网 - 专注C/C++及内核技术
...r directory
[Thu Jan 12 17:11:19 2006] [notice] caught SIGTERM, shutting down
[Fri Jan 13 12:34:46 2006] [warn] Init: Session Cache is not configured [hint: SSLSessionCache]
[Fri Jan 13 12:34:46 2006] [notice] suEXEC mechanism enabled (wrapper: /usr/local/httpd/bin/suexec)
[Fri Jan 13 12:34:...
R cannot be resolved - Android error
I just downloaded and installed the new Android SDK. I wanted to create a simple application to test drive it.
108 Answers
...
How to install Google Play Services in a Genymotion VM (with no drag and drop support)?
...ll Google Apps:
Upgrade Genymotion and VirtualBox to the latest version.
Download two zip files:
- ARM Translation Installer v1.1
- Google Apps for your Android version: 2.3.7 - 4.4.4 or 4.4 - 6.0 (with platform and variant) You can also find the GApps list in the wbroek user GitHubGist page.
Op...
Convert NaN to 0 in javascript
...t realizing it's bogus.
The way NaN works is if something goes wrong way down in some sub-sub-sub-operation (producing a NaN at that lower level), the final result will also be NaN, which you'll immediately recognize as an error even if your error handling logic (throw/catch maybe?) isn't yet comp...
Better techniques for trimming leading zeros in SQL Server?
...
Encapsulating this in a function resulted in slowing down my queries. I'm not quite sure why but I think it has to do with type conversion. Using the SUBSTRING inline was much faster.
– Ronnie Overby
Jul 26 '13 at 16:22
...
How to hide close button in WPF window?
...an make the window movable by adding this.DragMove(); to the window's MouseDown event
– paul
Feb 20 '14 at 21:55
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