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Sankey Diagrams in R?
...networkD3/",
"master/JSONdata/energy.json")
Energy <- jsonlite::fromJSON(URL)
# Plot
sankeyNetwork(Links = Energy$links, Nodes = Energy$nodes, Source = "source",
Target = "target", Value = "value", NodeID = "name",
units = "TWh", fontSize = 12, nodeWidth = 30)
...
using gitignore to ignore (but not delete) files
...iles in that directory. I tried git rm -r --cached , but that removes it from the remote repo. How can I stop tracking changes to this directory, but still allow it to exist? I also need to do this for 1 file, but changes to that also show up in git status after .gitignore ing them. What sho...
When should I use the “strictfp” keyword in java?
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Strictfp ensures that you get exactly the same results from your floating point calculations on every platform. If you don't use strictfp, the JVM implementation is free to use extra precision where available.
From the JLS:
Within an FP-strict expression, all
intermediate...
How to override equals method in Java
...bj.getClass()) ... rather than using the instanceofoperator or isAssignableFrom. This will require exact type match, rather than subtype match. - Symmetric requirement. Also to compare String or other Object types, you can use Objects.equals(this.name,other.name).
– YoYo
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How to hide a View programmatically?
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You can call view.setVisibility(View.GONE) if you want to remove it from the layout.
Or view.setVisibility(View.INVISIBLE) if you just want to hide it.
From Android Docs:
INVISIBLE
This view is invisible, but it still takes up space for layout purposes. Use with setVisibility(int) ...
Meaning of Git checkout double dashes
...changed branches instead. The -- separates the tree you want to check out from the files you want to check out.
git checkout -- master
It also helps us if some freako added a file named -f to our repository:
git checkout -f # wrong
git checkout -- -f # right
This is documented in git-c...
What's the best way to retry an AJAX request on failure using jQuery?
...'t get called on the retry. Here's my solution, which is heavily borrowed from @cjpak's answer here. In my case I want to retry when AWS's API Gateway responds with 502 error.
const RETRY_WAIT = [10 * 1000, 5 * 1000, 2 * 1000];
// This is what tells JQuery to retry $.ajax requests
// Ideas for...
RESTful Alternatives to DELETE Request Body
... like Akamai EdgeConnect. I know for a fact that EdgeConnect strips bodies from HTTP DELETE requests(since they consume bandwidth are are likely invalid). It's also likely that similar services do the same(see Kindle's acceleration feature, and other CDN-like services). You should probably redesign ...
What are the -Xms and -Xmx parameters when starting JVM?
...the JVM can/will use more memory than just the size allocated to the heap. From Oracle's documentation:
Note that the JVM uses more memory than just the heap. For example Java methods, thread stacks and native handles are allocated in memory separate from the heap, as well as JVM internal data s...
rreplace - How to replace the last occurrence of an expression in a string?
Is there a quick way in Python to replace strings but, instead of starting from the beginning as replace does, starting from the end? For example:
...