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How can I handle R CMD check “no visible binding for global variable” notes when my ggplot2 syntax i
...ot and data.table, and thus has tons of these warnings, which have kept me from noticing other more important warnings that really were problems I needed to fix.
– Ken Williams
Nov 25 '13 at 20:06
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Why do python lists have pop() but not push()
... The tutorial seems to suggest that it simply pushes and pops from the end: "The list methods make it very easy to use a list as a stack, where the last element added is the first element retrieved (“last-in, first-out”). To add an item to the top of the stack, use append(). To ret...
Local variables in nested functions
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The nested function looks up variables from the parent scope when executed, not when defined.
The function body is compiled, and the 'free' variables (not defined in the function itself by assignment), are verified, then bound as closure cells to the function, wi...
Is there a way to change the environment variables of another process in Unix?
...t not help you.
Most programs will expect that env vars cannot be changed from the outside after startup, hence most will probably just read the vars they are interested in at startup and initialize based on that. So changing them afterwards will not make a difference, since the program will never ...
How do I have an enum bound combobox with custom string formatting for enum values?
...r display names without much hassle.
Look into the TypeConverter's ConvertFrom/ConvertTo methods, and use reflection to read attributes on your enum fields.
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Recursion or Iteration?
...ml
Link 2: Mastering Recursion
Most of recursion's bad reputation comes from the high costs and inefficiency in imperative languages. The author of this article talks about how to optimize recursive algorithms to make them faster and more efficient. He also goes over how to convert a traditiona...
How do I set the version information for an existing .exe, .dll?
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rcedit is relative new and works well from the command line: https://github.com/atom/rcedit
$ rcedit "path-to-exe-or-dll" --set-version-string "Comments" "This is an exe"
$ rcedit "path-to-exe-or-dll" --set-file-version "10.7"
$ rcedit "path-to-exe-or-dll" --set...
plot a circle with pyplot
...nd since the limits have never been set, they defaults to an x and y range from 0 to 1.
Here's a continuation of the example, showing how units matter:
circle1 = plt.Circle((0, 0), 2, color='r')
# now make a circle with no fill, which is good for hi-lighting key results
circle2 = plt.Circle((5, 5)...
What's the difference between using CGFloat and float?
...a double on 64-bit systems. However, the decision to do that was inherited from OS X, where it was made based on the performance characteristics of early PowerPC CPUs. In other words, you should not think that float is for 32-bit CPUs and double is for 64-bit CPUs. (I believe, Apple's ARM processors...
Link to “pin it” on pinterest without generating a button
...: "At this point, I’m just going to copy & paste from another post because… time." -- obviously less than ideal.
– Imperative
Feb 24 '15 at 1:11
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