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Select rows of a matrix that meet a condition
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This is easier to do if you convert your matrix to a data frame using as.data.frame(). In that ...
How to use XPath contains() here?
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202
You are only looking at the first li child in the query you have instead of looking for any li...
What is Microsoft.csharp.dll in .NET 4.0
This DLL is added by default in Visual Studio 2010 projects. What is this new assembly used for? It does not seem to contain much after looking at it using Reflector and Google does not seem to have much to say about it either.
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How to read and write INI file with Python3?
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edited Dec 24 '12 at 4:07
user904550
answered Jan 16 '12 at 18:34
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how to permit an array with strong parameters
..._ids are passed to the create action in an array
"category_ids"=>["", "2"],
Therefore, when declaring strong parameters, I explicitly set category_ids to be an array
params.require(:question).permit(:question_details, :question_content, :user_id, :accepted_answer_id, :province_id, :city, :cat...
Do I need a content-type header for HTTP GET requests?
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According to the RFC 7231 section 3.1.5.5:
A sender that generates a message containing a payload body SHOULD generate a Content-Type header field in that message unless the intended media type of the enclosed representation is unknown to the ...
Create whole path automatically when writing to a new file
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Something like:
File file = new File("C:\\user\\Desktop\\dir1\\dir2\\filename.txt");
file.getParentFile().mkdirs();
FileWriter writer = new FileWriter(file);
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What is the difference between Raising Exceptions vs Throwing Exceptions in Ruby?
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edited May 2 '13 at 14:23
Mason Wan
11811 silver badge88 bronze badges
answered Sep 9 '08...
Pass correct “this” context to setTimeout callback?
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EDIT: In summary, back in 2010 when this question was asked the most common way to solve this problem was to save a reference to the context where the setTimeout function call is made, because setTimeout executes the function with this pointing to the...
How to intercept all AJAX requests made by different JS libraries
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edited Jan 2 '17 at 13:13
answered Aug 16 '14 at 0:13
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