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How can I improve my paw detection?
...r time, frame in infile:
paw_slices = find_paws(frame)
# Hide any rectangles that might be visible
[rect.set_visible(False) for rect in rects]
# Set the position and size of a rectangle for each paw and display it
for slice, rect in zip(paw_slices, rects):
...
How to update Python?
.... 2.7.4),
different major version of official Python (e.g. 3.3), install side-by-side with old, set paths/associations to point to dominant (e.g. 2.7), shortcut to other (e.g. in BASH $ ln /c/Python33/python.exe python3).
The answer depends:
If OP has 2.7.x and wants to install newer version of...
How should one use std::optional?
...ading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When is s...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...TABLISHED; //进入TCP_ESTABLISHED状态
sk_set_txhash(sk);
inet->inet_id = jiffies;
sk_dst_set(sk, &rt->dst);
}
sendto
sys_sendto()->sock_sendmsg()->sock_sendmsg_nosec()->inet_sendmsg()
static int inet_autobind(struct sock *sk)
{
struct inet_sock *inet;
/* We may need to bind the s...
Virtual Memory Usage from Java under Linux, too much memory used
...umbers for memory. Here's what it says about the Hello World example:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2120 kgregory 20 0 4373m 15m 7152 S 0 0.2 0:00.10 java
VIRT is the virtual memory space: the sum of everything in the virtual memory map (see bel...
Is volatile expensive?
...an that volatile read operations can be done without a explicit cache invalidation on x86, and is as fast as a normal variable read (disregarding the reordering constraints of volatile)?
...
Why are C# 3.0 object initializer constructor parentheses optional?
...y correct. To flesh that out a bit more:
The feature of allowing you to elide the argument list as part of the "larger feature" of object initializers met our bar for "sugary" features. Some points we considered:
the design and specification cost was low
we were going to be extensively changing t...
How do I properly clean up Excel interop objects?
...= excelApp.Worksheets.Open(...);
...
Marshal.ReleaseComObject(sheet);
I didn't know that internally C# created a wrapper for the Worksheets COM object which didn't get released by my code (because I wasn't aware of it) and was the cause why Excel was not unloaded.
I found the solution to my probl...
Releasing memory in Python
...ory_info.
import os
import gc
import psutil
proc = psutil.Process(os.getpid())
gc.collect()
mem0 = proc.get_memory_info().rss
# create approx. 10**7 int objects and pointers
foo = ['abc' for x in range(10**7)]
mem1 = proc.get_memory_info().rss
# unreference, including x == 9999999
del foo, x
mem...
Microsecond timing in JavaScript
...ll be most probably using Date.now(), so this is still the best option considering the IE9 and it's millions of users, why mixing third-party library then
– Vitaliy Terziev
Aug 28 '16 at 13:54
...