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How to check if object (variable) is defined in R?
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You want exists():
R> exists("somethingUnknown")
[1] FALSE
R> somethingUnknown <- 42
R> exists("somethingUnknown")
[1] TRUE
R>
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How do RVM and rbenv actually work?
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241
Short explanation: rbenv works by hooking into your environment's PATH. The concept is simple, b...
Get jQuery version from inspecting the jQuery object
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518
You can use either $().jquery; or $.fn.jquery which will return a string containing the version...
Is there a faster/shorter way to initialize variables in a Rust struct?
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1 Answer
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What is the most useful script you've written for everyday life? [closed]
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How to generate random SHA1 hash to use as ID in node.js?
I am using this line to generate a sha1 id for node.js:
4 Answers
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Plot logarithmic axes with matplotlib in python
...de would look like:
import pylab
import matplotlib.pyplot as plt
a = [pow(10, i) for i in range(10)]
fig = plt.figure()
ax = fig.add_subplot(2, 1, 1)
line, = ax.plot(a, color='blue', lw=2)
ax.set_yscale('log')
pylab.show()
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How do I do a Date comparison in Javascript? [duplicate]
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if (date1.getTime() > date2.getTime()) {
alert("The first date is after the second date!");
}
Reference to Date object
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