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Passing multiple error classes to ruby's rescue clause in a DRY fashion
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201
You can use an array with the splat operator *.
EXCEPTIONS = [FooException, BarException]
begi...
SSL Error When installing rubygems, Unable to pull data from 'https://rubygems.org/
...ing to do the Michael Hartl tutorial. When I attempt to install rails 3.2.14 in my gemset, I get the following issue:
24 A...
How to define a two-dimensional array?
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1039
You're technically trying to index an uninitialized array. You have to first initialize the o...
Configure Log4net to write to multiple files
...s to your logger. For example:
<log4net>
<appender name="File1Appender" type="log4net.Appender.FileAppender">
<file value="log-file-1.txt" />
<appendToFile value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversi...
Calculate a Running Total in SQL Server
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15 Answers
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MySQL INNER JOIN select only one row from second table
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10 Answers
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Active
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Meaning of -
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129
To understand the "encoding" attribute, you have to understand the difference between bytes an...
快速理解 高频对冲套利自动交易（程式化交易） - 更多技术 - 清泛网 - 专注...
...、程序化交易等等的误解与混乱，特开贴探讨。破题篇：1、何谓：高频？T+0制度下，反反复复做同样一件...有感于，目前中国期货界，对于量化投资、程序化交易等等的误解与混乱，特开贴探讨。
破题篇：
1、何谓：高频...
Build vs new in Rails 3
...enrym:~/testapp$ rails c
Loading development environment (Rails 3.0.4)
r:001 > (some_firm = Firm.new).save # Create and save a new Firm
#=> true
r:002 > some_firm.clients # No clients yet
#=> []
r:003 > some_firm.clients.new # Create a new client
#=> #<Client i...