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Capture HTML Canvas as gif/jpg/png/pdf?
...s-domain resources in rendering your canvas, you will encounter a security error when you try to use the toDataUrl method.
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Unicode (UTF-8) reading and writing to files in Python
...ctions.html#open
open(file, mode='r', buffering=-1,
encoding=None, errors=None, newline=None,
closefd=True, opener=None)
Encoding is the name of the encoding used to decode or encode the
file. This should only be used in text mode. The default encoding is
platform dependent (...
mongodb/mongoose findMany - find all documents with IDs listed in array
I have an array of _ids and I want to get all docs accordingly, what's the best way to do it ?
5 Answers
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List comprehension: Returning two (or more) items for each item
...bda x: x + 2
>>> g = lambda x: x ** 2
>>> list(chain.from_iterable((f(x), g(x)) for x in range(3)))
[2, 0, 3, 1, 4, 4]
Timings:
from timeit import timeit
f = lambda x: x + 2
g = lambda x: x ** 2
def fg(x):
yield f(x)
yield g(x)
print timeit(stmt='list(chain.from_itera...
UICollectionView reloadData not functioning properly in iOS 7
...ock?
– liamnichols
Jul 25 '14 at 15:05
This worked for me, but I'm not sure I understand why it's necessary. Any idea ...
程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...通过，但是浏览器的锁还是没有变绿。
为什么呢？ 看提示，是因为12306使用了一个比较弱的机密算法（This site uses a weak security configuration (SHA-1 signatures), so your connection may not be private.），我猜他们是为了性能？？
但是，就算...
How do I import CSV file into a MySQL table?
... a local file, you might need to LOAD DATA LOCAL INFILE. If this throws an error 1148 "used command is not allowed", you can enable it by running mysql on the command line with --local-infile.
– Big McLargeHuge
Apr 15 '15 at 4:45
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Generate all permutations of a list without adjacent equal elements
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@flornquake Good catch! It's the good-old off-by-one error I'm afraid. So, this approach is not optimal, as it may have 1 conflict too many.
– Vincent van der Weele
Aug 13 '14 at 14:31
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Stack smashing detected
...caused due to a protection mechanism used by gcc to detect buffer overflow errors. For example in the following snippet:
#include <stdio.h>
void func()
{
char array[10];
gets(array);
}
int main(int argc, char **argv)
{
func();
}
The compiler, (in this case gcc) adds protection...
Create ArrayList from array
...y));
Make sure that myArray is the same type as T. You'll get a compiler error if you try to create a List<Integer> from an array of int, for example.
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