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rbenv not changing ruby version
... add the line to your profile so it runs each time you open a new terminal window:
$ echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
There are other ways to modify the path, feel free to substitute any of them instead of running the rbenv init.
NOTE: reinstall Rails with:
$ gem install rails...
How to get cumulative sum
...use for SUM by default means RANGE UNBOUNDED PRECEDING AND CURRENT ROW for window frame ("General Remarks" at https://msdn.microsoft.com/en-us/library/ms189461.aspx)
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redirect COPY of stdout to log file from within bash script itself
...re didn't work for me, trying to schedule a script to run under MingW on a Windows system. It complained, I believe, about unimplemented process substitution. This answer worked just fine, after the following change, to capture both stderr and stdout: ``` -) | tee foo.log +) 2>&1 | ...
How to create SBT project with IntelliJ Idea?
... delegate your project build to SBT, and use SBT interactively from a tool window in IDEA. Version 0.2.0-SNAPSHOT of sbt-idea fixes a few little annoyances -- creation of a parent project, and preservation of manual IntelliJ configuration.
– retronym
Nov 23 '10...
Why is JSHINT complaining that this is a strict violation?
...non-strict mode, calling gotoPage(5) would bind this to the global object (window in the browser). In strict mode, this would be undefined, and you would get in trouble.
Presumably, you mean to call this function with a bound this context, e.g. gotoPage.bind(myObj)(5) or gotoPage.call(myObj, 5). If...
网站伪静态Rewrite重写中文路径时乱码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...们来总结一下我的分析过程。转自：http://www.111cn.net/sys/Windows/55779.htm
一、问题的由来。
URL就是网址，只要上网，就一定会用到。
一般来说，URL只能使用英文字母、阿拉伯数字和某些标点符号，不能使用其他文字和符号。比...
What is the difference between a Docker image and a container?
... I guess what I'm stuck on is how images run (I use boot2docker on Windows). Why do we create images for applications, say mysql? At this point, how is mysql even running? Don't I need to have a Linux image to run mysql on top of?
– Kenny Worden
Feb 17 ...
How to limit the amount of concurrent async I/O operations?
... semaphoreslim to control max concurrent I/O requests similar to a sliding window pattern one request completes, leaves the semaphore and the next one gets in.
usage:
await ForEachAsync(urlStrings, YourAsyncFunc, optionalMaxDegreeOfConcurrency);
public static Task ForEachAsync<TIn>(
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How to compile without warnings being treated as errors?
The problem is that the same code that compiles well on Windows, is unable to compile on Ubuntu. Every time I get this error:
...
Haskell testing workflow
...
You can then run your benchmarks from the command line and get pop-up KDE windows with benchmark results, etc.
Since in practice you're living in cabal anyways while developing Haskell code, it makes a lot of sense to integrate your toolchain with it.
Edit: Cabal test support now does exist. See ...