大约有 30,000 项符合查询结果（耗时：0.0269秒） [XML]
How to count the number of true elements in a NumPy bool array
...ng two numpy arrays and counting the number of matches (e.g. correct class prediction in machine learning), I found the below example for two dimensions useful:
import numpy as np
result = np.random.randint(3,size=(5,2)) # 5x2 random integer array
target = np.random.randint(3,size=(5,2)) # 5x2 rand...
Why is Linux called a monolithic kernel?
...st" Torvalds
Obviously, that did not come true any more than Tanenbaum's prediction that x86 would soon be obsolete.
NB:
When I say "Minix", I do not imply Minix 3. Additionally, when I mention The HURD, I am referencing (mostly) the Mach microkernel. It is not my intent to disparage the recent ...
Setting individual axis limits with facet_wrap and scales = “free” in ggplot2
I'm creating a facetted plot to view predicted vs. actual values side by side with a plot of predicted value vs. residuals. I'll be using shiny to help explore the results of modeling efforts using different training parameters. I train the model with 85% of the data, test on the remaining 15%, a...
Differences between numpy.random and random.random in Python
...tic - that is, if you know a few key bits of information, it's possible to predict with absolute certainty what number will come next. For this reason, neither numpy.random nor random.random is suitable for any serious cryptographic uses. But because the sequence is so very very long, both are fine ...
Is the order guaranteed for the return of keys and values from a LinkedHashMap object?
I know LinkedHashMap has a predictable iteration order (insertion order). Does the Set returned by LinkedHashMap.keySet() and the Collection returned by LinkedHashMap.values() also maintain this order?
...
Virtual functions and performance - C++
... a vfunc on modern processors is the pipeline bubble caused by a branch mispredict.
– Crashworks
Apr 13 '09 at 4:45
10
...
PHP function to generate v4 UUID
...ly secure values. In other words, values generated by this function may be predictable. If you need to ensure that the UUIDs are not predictable, you should rather use Jack's solution below, which makes use of the openssl_random_pseudo_bytes() function.
– Richard Keller
...
Is it possible to get element from HashMap by its position?
...ain constant over time.
Take a look at LinkedHashMap, which guarantees a predictable iteration order.
share
|
improve this answer
|
follow
|
...
Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
This is a question that came to mind while reading the brilliant answer by Mysticial to the question: why is it faster to process a sorted array than an unsorted array ?
...
load and execute order of scripts
...ripts (regardless of how they are specified as async) load and run in an unpredictable order. The browser loads them in parallel and it is free to run them in whatever order it wants.
There is no predictable order among multiple async things. If one needed a predictable order, then it would have ...