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Custom circle button
...lighted etc), you will use selector as described here.
You've to keep both files in order to make the drawable backward-compatible. Otherwise, you'll face weird exceptions in previous android version.
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Difference between java.io.PrintWriter and java.io.BufferedWriter?
...thods like println(). You can essentially use a PrintWriter to write to a file just like you would use System.out to write to the console.
A BufferedWriter is an efficient way to write to a file (or anything else), as it will buffer the characters in Java memory before (probably, depending on the ...
Undo scaffolding in Rails
...oy/undo it using
rails destroy scaffold MyFoo
That will delete all the files created by generate, but not any additional changes you may have made manually.
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How to add pandas data to an existing csv file?
...o use the pandas to_csv() function to add a dataframe to an existing csv file. The csv file has the same structure as the loaded data.
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Rails Root directory path?
...an access rails app path using variable RAILS_ROOT.
For example:
render :file => "#{RAILS_ROOT}/public/layouts/mylayout.html.erb"
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What does “#pragma comment” mean?
...tive which indicates Visual C++ to leave a comment in the generated object file. The comment can then be read by the linker when it processes object files.
#pragma comment(lib, libname) tells the linker to add the 'libname' library to the list of library dependencies, as if you had added it in the ...
Linux command: How to 'find' only text files?
...ich I have found to be a very fast way to use find to find only non-binary files:
find . -type f -exec grep -Iq . {} \; -print
The -I option to grep tells it to immediately ignore binary files and the . option along with the -q will make it immediately match text files so it goes very fast. You c...
Visual Studio retrieving an incorrect path to a project from somewhere
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Go to Manage Workspaces (either through the File/Source Control menu or the workspace drop down in Source Control Explorer)
select edit for your workspace.
You should see, under working folders, a mapping for the source
control directory to the old/wrong project direct...
source of historical stock data [closed]
...ith granularity as low as 1 minute and stores the prices locally in a text file. It basically downloads the real-time data from Yahoo with a 15 minute delay. Since I wanted a more robust solution and I'm working on a big school project for which we need data, I decided to write my own data feed engi...
CMake unable to determine linker language with C++
... language for target "helloworld".
In my case this was due to having C++ files with the .cc extension.
If CMake is unable to determine the language of the code correctly you can use the following:
set_target_properties(hello PROPERTIES LINKER_LANGUAGE CXX)
The accepted answer that suggests app...