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How to click first link in list of items after upgrading to Capybara 2.0?
...al .item's so it raises an exception. I consider this behavior of Capybara 2 very good.
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Which is the first integer that an IEEE 754 float is incapable of representing exactly?
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2 Answers
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How to quit scala 2.11.0 REPL?
In the last version of scala (2.10.3) REPL, I can type exit to quit from REPL. However, in Scala 2.11.0 this doesn't work.
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Asterisk in function call
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* is the "splat" operator: It takes a list as input, and expands it into actual positional argum...
How do I select a merge strategy for a git rebase?
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You can use this with Git v1.7.3 or later versions.
git rebase --strategy-option theirs ${bra...
How to flatten only some dimensions of a numpy array
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Take a look at numpy.reshape .
>>> arr = numpy.zeros((50,100,25))
>>> arr.sh...
Boolean operators && and ||
...rter ones are vectorized, meaning they can return a vector, like this:
((-2:2) >= 0) & ((-2:2) <= 0)
# [1] FALSE FALSE TRUE FALSE FALSE
The longer form evaluates left to right examining only the first element of each vector, so the above gives
((-2:2) >= 0) && ((-2:2) <...
Regex to match a digit two or four times
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What does the star operator mean, in a function call?
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The single star * unpacks the sequence/collection into positional arguments, so you can do this:...
Python Dictionary to URL Parameters
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Use urllib.urlencode(). It takes a dictionary of key-value pairs, and converts it into a form ...