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Python: fastest way to create a list of n lists
...
The probably only way which is marginally faster than
d = [[] for x in xrange(n)]
is
from itertools import repeat
d = [[] for i in repeat(None, n)]
It does not have to create a new int object in every iteration and is about 15 % faster on my machine.
Edi...
Logging best practices [closed]
...You need at least to set the ActivityId once for each logical operation in order to correlate.
Start/Stop and the LogicalOperationStack can then be used for simple stack-based context. For more complex contexts (e.g. asynchronous operations), using TraceTransfer to the new ActivityId (before changi...
How do you run a Python script as a service in Windows?
...method—usually with some kind of infinite loop that might be interrupted by checking a flag, which you set in the SvcStop method
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How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”
Really thought I had this issue fixed, but it was only disguised before.
17 Answers
1...
What are some uses of decltype(auto)?
...code
For non-generic code, like the initial example you gave, you can manually select to get a reference as a return type:
auto const& Example(int const& i)
{
return i;
}
but in generic code you want to be able to perfectly forward a return type without knowing whether you are dea...
Relative paths in Python
...s solve this with the the amazing pathlib:
# Hope you don't be imprisoned by legacy Python code :)
from pathlib import Path
# `cwd`: current directory is straightforward
cwd = Path.cwd()
# `mod_path`: According to the accepted answer and combine with future power
# if we are in the `helper_script...
Why use try {} finally {} with an empty try block?
...ted
finally blocks are executed before the
thread is aborted”. So in order to
guarantee that your processing
finishes even if your thread is
aborted in the middle by someone
calling Abort on your thread, you can
place all your code in the finally
block (the alternative is to write
...
Unicode Processing in C++
...use the open source Internation Components for Unicode (ICU) library originally developed by Taligent.
It handles strings, locales, conversions, date/times, collation, transformations, et. al.
Start with the ICU Userguide
...
Multiple actions were found that match the request in Web Api
...ntroller}/{id}",
defaults: new { id = RouteParameter.Optional });
But in order to have multiple actions with the same http method you need to provide webapi with more information via the route like so:
routes.MapHttpRoute(
name: "API Default",
routeTemplate: "api/{controller}/{action}/{id}",
defa...
Circular gradient in android
...olling, you're right that the android:gradientRadius="250" doesn't work at all, I guess it behaved differently on older Android versions.
– Justin
Apr 22 '15 at 14:58
add a co...