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Python pip install fails: invalid command egg_info
...wice (in my virtual env I had distribute 0.6.49 and setuptools 0.6c11) and then I could install the latest version of pip without problems.
– glarrain
Dec 2 '13 at 21:53
3
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Remove duplicated rows using dplyr
...(0:1, 10, replace = T),
z = 1:10
)
One approach would be to group, and then only keep the first row:
df %>% group_by(x, y) %>% filter(row_number(z) == 1)
## Source: local data frame [3 x 3]
## Groups: x, y
##
## x y z
## 1 0 1 1
## 2 1 0 2
## 3 1 1 4
(In dplyr 0.2 you won't need the...
get the latest fragment in backstack
...t() {
return getSupportFragmentManager().getBackStackEntryCount();
}
Then, when you add/replace your fragment using FragmentTransaction method, generate a unique tag to your fragment (e.g.: by using the number of fragments in your stack):
getSupportFragmentManager().beginTransaction().add(you...
Changing the resolution of a VNC session in linux [closed]
... with:
vncserver -geometry 1600x1200 -randr 1600x1200,1440x900,1024x768
Then resize with:
xrandr -s 1600x1200
xrandr -s 1440x900
xrandr -s 1024x768
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How to delete an element from an array in C#
...can also convert your array to a list and call remove on the list. You can then convert back to your array.
int[] numbers = {1, 3, 4, 9, 2};
var numbersList = numbers.ToList();
numbersList.Remove(4);
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What's the fuss about Haskell? [closed]
...he one above would result in the entire file being loaded into memory, and then written out again under a new name.
Haskell is "lazy". It doesn't calculate things until it needs to, and by extension doesn't calculate things it never needs. For instance, if you were to remove the writeFile line, Has...
EC2 instance types's exact network performance?
...CloudHarmony iperf benchmarks show initial transfers start at 1 GBit/s and then gradually drop to the sustained levels above after a few minutes. PDF links to reports below:
t2.small (PDF)
t2.medium (PDF)
t2.large (PDF)
Note that these are within the same region - if you're transferring across reg...
Android. Fragment getActivity() sometimes returns null
...tifyDataSetChanged();
}
}
If we open the fragment, push a task, and then quickly press back to return to a previous activity, when the task is finished, it will try to access the activity in onPostExecute() by calling the getActivity() method. If the activity is already detached and this che...
How to merge lists into a list of tuples?
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If you were using python3 then c would not be a list it would be a map object, also using a lambda is going to be a lot less efficient than just zipping, if you have different length lists and want to handle that then you would use izip_longest/zip_lo...
How to get Resource Name from Resource id
...s name is a single string of the form "package:type/entry" The difference then seems to be in the added package:type for getResourceName
– Jose_GD
Mar 22 '14 at 1:26
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