大约有 48,000 项符合查询结果（耗时：0.0593秒） [XML]
How to do exponentiation in clojure?
...ell: I'd recommend using this rather than going via Java interop since it handles all the Clojure arbitrary-precision number types correctly. It is in namespace clojure.math.numeric-tower.
It's called expt for exponentiation rather than power or pow which maybe explains why it's a bit hard to find ...
Bundler: Command not found
I am hosting on a vps, ubuntu 10.04, rails 3, ruby and mysql installed correctly by following some tutorials. If I run bundle check or bundle install I get the error '-bash: bundle: command not found'. From gem list --local I see 'bundler (1.0.2, 1.0.0)' is installed.
...
How does comparison operator works with null int?
I am starting to learn nullable types and ran into following behavior.
4 Answers
4
...
How do I use Notepad++ (or other) with msysgit?
... to work with Git on Windows?", I prefer a wrapper, as it is easier to try and switch editors, or change the path of one editor, without having to register said change with a git config again.
But that is just me.
Additional information: the following solution works with Cygwin, while the zuamlif...
How do I create a nice-looking DMG for Mac OS X using command-line tools?
...cation. I want it to be a disk image (DMG), with a predefined size, layout and background image.
14 Answers
...
How to convert a PIL Image into a numpy array?
Alright, I'm toying around with converting a PIL image object back and forth to a numpy array so I can do some faster pixel by pixel transformations than PIL's PixelAccess object would allow. I've figured out how to place the pixel information in a useful 3D numpy array by way of:
...
JSON.parse vs. eval()
... just wondering if JSON.parse() - which I assume is a part of JavaScript and not a browser-specific function - is more secure.
...
How to get a float result by dividing two integer values using T-SQL?
Using T-SQL and Microsoft SQL Server I would like to specify the number of decimal digits when I do a division between 2 integer numbers like:
...
How do I find where JDK is installed on my windows machine?
...ava -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java
If you are using Windows:
c:\> for %i in (java.exe) do @echo. %~$PATH:i
share
|
improve this answer
...
Vagrant error: NFS is reporting that your exports file is invalid
...
Try using the known good versions of VirtualBox and Vagrant noted in Discourse as Your First Rails App:
Vagrant 1.1.2
VirtualBox 4.2.10
I was having the same issue on Mac (OS X 10.9 (Mavericks)), but rolling back to these versions seemed to fix it for me.
...