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What is a CSRF token ? What is its importance and how does it work?
...;SomeAmount>. (Your account number is not needed, because it is implied by your login.)
You visit www.cute-cat-pictures.org, not knowing that it is a malicious site.
If the owner of that site knows the form of the above request (easy!) and correctly guesses you are logged into mybank.com (require...
Sort an Array by keys based on another Array?
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Just use array_merge or array_replace. Array_merge works by starting with the array you give it (in the proper order) and overwriting/adding the keys with data from your actual array:
$customer['address'] = '123 fake st';
$customer['name'] = 'Tim';
$customer['dob'] = '12/08/1986';...
If Python is interpreted, what are .pyc files?
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They contain byte code, which is what the Python interpreter compiles the source to. This code is then executed by Python's virtual machine.
Python's documentation explains the definition like this:
Python is an interpreted language...
__proto__ VS. prototype in JavaScript
...be a property of the actual object because its just a temporary thing used by the constructor function to outline what myobject.__proto__ should look like.
– Alex_Nabu
Jul 29 '15 at 3:38
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Remove duplicated rows using dplyr
...oach 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 dummy z variable and will just be
able to writ...
Why is my program slow when looping over exactly 8192 elements?
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The difference is caused by the same super-alignment issue from the following related questions:
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
Matrix multiplication: Small difference in matrix size, large ...
Are loops really faster in reverse?
...th mentioning is that we are talking about interpreted languages such as Ruby, Python. Compiled languages e.g. Java have optimizations on compiler level which which will "smooth" these differences to the point that it does not matter if .length is in declaration of for loop or not.
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What's an easy way to read random line from a file in Unix command line?
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You can get shuf on OS X by installing coreutils from Homebrew. Might be called gshuf instead of shuf.
– Alyssa Ross
Dec 27 '13 at 22:27
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How to convert integer timestamp to Python datetime
...r question?
EDIT: J.F. Sebastian correctly suggested to use true division by 1e3 (float 1000). The difference is significant, if you would like to get precise results, thus I changed my answer. The difference results from the default behaviour of Python 2.x, which always returns int when dividing (...
How to get existing fragments when using FragmentPagerAdapter
.... I have implemented FragmentPagerAdapter just as same as it is provided by the Android sample project Support4Demos .
1...