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Vagrant ssh authentication failure
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This one pointed me in the right direction, in my case all I had to do was to delete the .vagrant/machines/default/virtualbox/private_key file and after running vagrant up it replaced the file with the correct one - I would backup...
How to randomize (or permute) a dataframe rowwise and columnwise?
...meter replace=FALSE (the default) to sample(...) ensures that sampling is done without replacement which accomplishes a row wise shuffle.
Shuffle column-wise:
> df3 <- df1[,sample(ncol(df1))]
> df3
c a b
1 0 1 1
2 0 1 0
3 0 0 1
4 0 0 0
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When should I use git pull --rebase?
...hink that it would actually be better if these two--remote and local--were one branch. Like in SVN. It is here where git pull --rebase comes into play. You no longer merge--you actually commit on top of the remote branch. That's what it actually is about.
Whether it's dangerous or not is the qu...
How to set java_home on Windows 7?
...ent Variables in 'System' in the control panel and made two new variables, one for user variables and one for system variables. Both were named JAVA_HOME and both pointing to
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How to delete multiple buffers in Vim?
...L files with :bd *.xml . However, Vim does not allow this (E93: More than one match...).
8 Answers
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The smallest difference between 2 Angles
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although one might want to do a % 360, e.g. if I had the angle 0 and the target angle 721, the correct answer would be 1, the answer given by the above would be 361
– Tom J Nowell
Oct 25 '11 at 1...
How to get one value at a time from a generator function in Python?
Very basic question - how to get one value from a generator in Python?
6 Answers
6
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Easiest way to convert int to string in C++
...upposed to be. It's a member of std in every compiler I know of except for one.
– Mooing Duck
May 31 '13 at 21:34
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How to create a tuple with only one element
...Empty tuples are constructed by an empty pair of parentheses; a tuple with one item is constructed by following a value with a comma (it is not sufficient to enclose a single value in parentheses). Ugly, but effective.
If you truly hate the trailing comma syntax, a workaround is to pass a list to ...
How to force Selenium WebDriver to click on element which is not currently visible?
... make sure you look at computed style):
visibility != hidden
display != none (is also checked against every parent element)
opacity != 0 (this is not checked for clicking an element)
height and width are both > 0
for an input, the attribute type != hidden
Your element is matching one of thos...