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Converting an array of objects to ActiveRecord::Relation
... ActiveRecord::Relation since a Relation is just a builder for a SQL query and its methods do not operate on actual data.
However, if what you want is a relation then:
for ActiveRecord 3.x, don’t call all and instead call scoped, which will give back a Relation which represents the same records...
iTextSharp - Sending in-memory pdf in an email attachment
...what I am doing wrong in my code. I run the code above from a ASP.Net page and get "Cannot Access a Closed Stream".
5 Answ...
How to redirect stderr and stdout to different files in the same line in script?
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Just add them in one line command 2>> error 1>> output
However, note that >> is for appending if the file already has data. Whereas, > will overwrite any existing data in the file.
So, command 2> error 1> output if you do not...
Difference between wait and sleep
What is difference between wait and sleep ?
3 Answers
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Get model's fields in Django
... in front of meta indicate that the _meta attribute is a private attribute and shouldn't be accessed directly? ... Because, for example, the layout of _meta could change in the future and not be a stable API?
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How to check whether a script is running under Node.js?
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There is a problem here and nailer "nailed it". I'm trying CommonJS in the browser, and the module loader I'm using defines module.exports, so this solution would incorrectly tell me I'm in node.
– Mark Melville
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Mozilla PDF.js：PDF在线预览 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ent Format(PDF) viewer that is built with HTML5.PDF.js is community-driven and supportedby Mozilla Labs. Our goal is to create a general-purpose, web standards-basedplatform for parsing and rendering PDFs.
PDF.js是一个由HTML5建立的PDF阅读器。依托开源社区驱动和Mozilla实验室的...
Unable to read data from the transport connection : An existing connection was forcibly closed by th
I have a server app and sometimes, when the client tries to connect, I get the following error:
21 Answers
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How to get week number in Python?
...ndar() is an instance-method returning a tuple containing year, weeknumber and weekday in respective order for the given date instance.
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How to calculate number of days between two dates
...dates taking from Date Picker control. I have selected start date 2/2/2012 and end date 2/7/2012. I have written following code for that.
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