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Trying to SSH into an Amazon Ec2 instance - permission error
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The problem is having wrong mod on the file.
Easily solved by executing -
chmod 400 mykey.pem
Taken from Amazon's instructions -
Your key file must not be publicly viewable for SSH to work. Use this
command if needed: chmod 400 mykey.pem
400 protects i...
Rails filtering array of objects by attribute value
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This is fine :
@logos = @attachments.select { |attachment| attachment.file_type == 'logo' }
@images = @attachments.select { |attachment| attachment.file_type == 'image' }
but for performance wise you don't need to iterate @attachments twice :
@logos , @images = [], []
@attachments.each do |a...
Stop Chrome Caching My JS Files
I will make a change to my JS files but it won't really change in the browser, I have to rename the files every time so that it reloads it. Is there some sort of .htaccess command I can add or something to make it stop caching?
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How to change tab size on GitHub?
When I view files on GitHub, tabs appear as 8 spaces.
8 Answers
8
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C++ semantics of `static const` vs `const`
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At file scope, no difference in C++. const makes internal linkage the default, and all global variables have static lifetime. But the first variant has the same behavior in C, so that may be a good reason to use it.
Within a ...
How to compare files from two different branches?
...show you the difference between two commits:
git diff mybranch master -- myfile.cs
Or, equivalently:
git diff mybranch..master -- myfile.cs
Note you must specify the relative path to the file. So if the file were in the src directory, you'd say src/myfile.cs instead of myfile.cs.
Using the latter ...
Visual Studio 2013 hangs when opening a solution
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Sometimes it's enough to simply delete the ".v12.suo" file and try to open the solution again. Helped me many times when VS2013 was freezing on loading a project.
share
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improv...
What is a stream?
...nal stream didn't.
Stream is a useful abstraction because it can describe files (which are really arrays, hence seek is straightforward) but also terminal input/output (which is not seekable unless buffered), sockets, serial ports, etc. So you can write code which says either "I want some data, and...
Undo git reset --hard with uncommitted files in the staging area
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You should be able to recover any files back that you added to the index (e.g, as in your situation, with git add .) although it might be a bit of work. In order to add a file to the index, git adds it to the object database, which means it can be recovered ...
Removing duplicate rows in Notepad++
...eed to download it from here: https://sourceforge.net/projects/npp-plugins/files/TextFX
The TextFX plugin used to be included in older versions of Notepad++, or be possible to add from the menu by going to Plugins -> Plugin Manager -> Show Plugin Manager -> Available tab -> TextFX -> ...