大约有 40,200 项符合查询结果（耗时：0.0501秒） [XML]
What is in your Mathematica tool bag? [closed]
...e one liner:
SelectEquivalents[hamlst,
#[[;; 3]] &,
#[[{4, 5}]] -> (Complex @@ #[[6 ;;]]) &,
{#1, SparseArray[#2]} &]
Honestly, this is my Swiss Army Knife, and it makes complex things very simple. Most of my other tools are somewhat domain specific, so I'll p...
Evenly distributing n points on a sphere
...answer here (and using Python):
> cat ll.py
from math import asin
nx = 4; ny = 5
for x in range(nx):
lon = 360 * ((x+0.5) / nx)
for y in range(ny):
midpt = (y+0.5) / ny
...
Add and Remove Views in Android Dynamically?
...
224
ViewParents in general can't remove views, but ViewGroups can. You need to cast your parent to a...
What is “entropy and information gain”?
... f
Brian 0 2 5 m
Caroline 1 4 8 f
David 0 2 5 m
The goal is to build a decision tree. An example of a tree would be:
length<7
| num-vowels<3: male
| num-vowels>=3
| | ends-vowel=1: fe...
How exactly does the android:onClick XML attribute differ from setOnClickListener?
...
614
+100
No, that...
Is there a concurrent List in Java's JDK?
...l Bourque
186k5757 gold badges571571 silver badges804804 bronze badges
answered Aug 2 '11 at 17:57
user177800user177800
...
How to initialize a JavaScript Date to a particular time zone
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401
Background
JavaScript's Date object tracks time in UTC internally, but typically accepts inpu...
Is there a combination of “LIKE” and “IN” in SQL?
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edited May 14 at 6:45
ᴍᴀᴛᴛ ʙᴀᴋᴇʀ
2,47011 gold badge2020 silver badges3737 bronze badges
...
How can I use numpy.correlate to do autocorrelation?
...
bkanuka
68844 silver badges1515 bronze badges
answered Mar 24 '09 at 6:09
A. LevyA. Levy
...