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What's the difference between a proc and a lambda in Ruby?
...t;Proc:0x3c7d28@(irb):1>
p.call 1, 2 # => 5
p.call 1 # => NoMethodError: undefined method `**' for nil:NilClass
p.call 1, 2, 3 # => 5
l = lambda {|a, b| puts a**2+b**2 } # => #<Proc:0x15016c@(irb):5 (lambda)>
l.call 1, 2 # => 5
l.call 1 # => ArgumentError: wrong number of ...
How to get the contents of a webpage in a shell variable?
...on is not accepting convert_links = on with -O- option. It is failing with error -k can be used together with -O only if outputting to a regular file.. Is it expected?
– Prasad Bonthu
Jul 17 '18 at 14:40
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How can I recursively find all files in current and subfolders based on wildcard matching?
...nt to be notified about directories you don't have permission to (or other errors), you can do find . -name "foo*" 2>/dev/null
– Jobbo
Aug 15 '17 at 10:54
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Convert JSON String To C# Object
...lution. After all, setTest(String test) is not returning, which is compile error as well.
– Payam
Aug 18 '14 at 3:05
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How to express a NOT IN query with ActiveRecord/Rails?
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edited Nov 27 '14 at 16:05
answered Apr 14 '11 at 17:02
P...
rmagick gem install “Can't find Magick-config”
I get the error shown below when attempting to install the rmagick gem. I am on Snowleopard 10.6 using RVM, Ruby 1.9.2-head and Rails 3.05. Responses to similar questions recommended installing ImageMagick, which I successfully did. Other suggested installing the "libmagick9-dev library", however, I...
实战Nginx与PHP（FastCGI）的安装、配置与优化 - 更多技术 - 清泛网 - 专注...
...版本的不确定性，读者也可以在安装PHP过程中，根据错误提示信息，安装对应的软件库。
3.开始编译安装PHP和PHP-FPM
编译安装PHP和PHP-FPM很简单，下面是安装过程：
[root@localhost local]#tar zxvf php-5.2.13.tar.gz
[root@localhost local]#g...
How can I configure my makefile for debug and release builds?
...uild debug/release into its own folders. Example: stackoverflow.com/a/48793058/412080
– Maxim Egorushkin
Jul 9 '18 at 9:23
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Convert a Scala list to a tuple?
... solution, the complaints about type-safety mean that you might get a MatchError at runtime. If you want, you can try-catch that error and do something if the List has the wrong length. Another nice feature of this solution is that the output doesn't have to be a tuple, it can be one of your own c...
2015年硅谷最火的高科技创业公司都有哪些 - 资讯 - 清泛网 - 专注C/C++及内核技术
...便的数据仓库解决方案，就是SQL接口，跟各个云服务无缝连接，最大特点就是快，在TB到PB级别非常好的性能，我在工作中也是直接使用，它还支持不同的硬件平台，如果想速度更快，可以使用SSD的，当然支持容量就小些。
Hadoop...