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Check if a table exists in Rails
... a website so I want to make sure they have migrated the table before they can do a rake task which will populate that respective table.
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Fastest way to convert Image to Byte array
I am making Remote Desktop sharing application in which I capture an image of the Desktop and Compress it and Send it to the receiver. To compress the image I need to convert it to a byte[].
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Is $(document).ready necessary?
I saw this question in stackoverflow but do not feel that it was answered at all.
5 Answers
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.NET HttpClient. How to POST string value?
How can I create using C# and HttpClient the following POST request:
5 Answers
5
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EC2 instance types's exact network performance?
I cannot find exact network performance details for different EC2 instance types on Amazon. Instead, they are only saying:
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LaTeX Optional Arguments
How do you create a command with optional arguments in LaTeX?
Something like:
6 Answers
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What does it mean in shell when we put a command inside dollar sign and parentheses: $(command)
I just want to understand following line of code in shell. It is used to get the current working directory. I am aware that $(variable) name return the value inside the variable name, but what is $(command) supposed to return? Does it return the value after executing the command? In that case, w...
What are “res” and “req” parameters in Express functions?
In the following Express function:
3 Answers
3
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error: use of deleted function
I've been working on some C++ code that a friend has written and I get the following error that I have never seen before when compiling with gcc4.6:
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