大约有 44,000 项符合查询结果（耗时：0.0562秒） [XML]
John Carmack's Unusual Fast Inverse Square Root (Quake III)
...ulates the inverse square root of a float, 4x faster than regular (float)(1.0/sqrt(x)) , including a strange 0x5f3759df constant. See the code below. Can someone explain line by line what exactly is going on here and why this works so much faster than the regular implementation?
...
How can I catch a ctrl-c event?
...
174
signal isn't the most reliable way as it differs in implementations. I would recommend using s...
Setting EditText imeOptions to actionNext has no effect
...omplex (not really) xml layout file. One of the views is a LinearLayout ( v1 ) with two children: an EditText( v2 ) and another LinearLayout( v3 ). The child LinearLayout in turn has an EditText( v4 ) and an ImageView( v5 ).
...
AngularJS 1.2 $injector:modulerr
When using angular 1.2 instead of 1.07 the following piece of code is not valid anymore, why?
18 Answers
...
How can I get the DateTime for the start of the week?
...
1
2
Next
768
...
Run an OLS regression with Pandas Data Frame
...
154
I think you can almost do exactly what you thought would be ideal, using the statsmodels packa...
Scala 2.8 breakOut
...e the best builder possible. For example, if I were to write Map('a' -> 1).map(_.swap), I'd like to get a Map(1 -> 'a') back. On the other hand, a Map('a' -> 1).map(_._1) can't return a Map (it returns an Iterable).
The magic of producing the best possible Builder from the known types of t...
How do I retrieve the number of columns in a Pandas data frame?
...
312
Like so:
import pandas as pd
df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [...
SQL - Update multiple records in one query
...
177
Try either multi-table update syntax
UPDATE config t1 JOIN config t2
ON t1.config_name =...
Adding days to $Date in PHP
I have a date returned as part of a mySQL query in the form 2010-09-17
9 Answers
9
...